Quadratic Equations For IBPS Clerk PDF:
Download Quadratic Equations For IBPS Clerk PDF. Practice Quadratic Equation Questions and Answers for Banking Exams based on asked questions in previous papers.
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Question 1:
I.$2a^{2}+a-1=0$
II.$12b^{2}-17b+6=0$
a) $a<b$
b) $a\leq b$
c) Relationship between $a$ & $b$ cannot be established
d) $a>b$
e) $a\geq b$
Question 2:
I.$a^{2}-5a+6=0$
II. $2b^{2}-13b+21=0$
a) $a<b$
b) $a\leq b$
c) Relationship between $a$ & $b$ cannot be established
d) $a>b$
e) $a\geq b$
Question 3:
I.$a^{2}+5a+6=0$
II.$b^{2}+7b+12=0$
a) $a<b$
b) $a \leq b$
c) Relationship between $a$ & $b$ cannot be established
d) $a>b$
e) $a \geq b$
Question 4:
I.$16a^{2}=1$
II.$3b^{2}+7b+2=0$
a) $a<b$
b) $a\leq b$
c) Relationship between $a$ & $b$ cannot be established
d) $a>b$
e) $a\geq b$
Question 5:
I.$a^{2}+2a+1=0$
II.$b^{2}=\pm4$
a) $a<b$
b) $a \leq b$
c) Relationship between $a$ & $b$ cannot be established
d) $a>b$
e) $a \geq b$
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Instructions: What approximate value should come in place of question mark (?) in the following questions? (Note: You are not expected to calculate the exact value.)
Question 6:
I.$p^{2}-7p=-12$
II.$q^{2}-3q+2=0$
a) if p<q
b) if p>q
c) if $p\leq$q
d) if $p\geq$q
e) if p=q
Question 7:
I. $12p^{2}-7p=-1$
II. $6q^{2}-7q+2=0$
a) if $p < q$
b) if $p > q$
c) if $p\leq q$
d) if $p\geq q$
e) if $p = q$
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Question 8:
I.$p^{2}+12p+35=0$
II.$2q^{2}+22q+56=0$
a) if p < q
b) if p>q
c) if $p \leq q$
d) if $p\geq q$
e) if p=q or no relationship can be established
Question 9:
I.$p^{2}-8p+15=0$
II.$q^{2}-5q=-6$
a) if p < q
b) if p>q
c) if $p\leq q$
d) if $p\geq q$
e) if p=q
Question 10:
I.$2p^{2}+20p+50=0$
II.$q^{2}=25$
a) if p<q
b) if p>q
c) if $p \leq q$
d) if $p\geq q $
e) if p = q
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Question 11:
I. $6p^{2}+5p+1=0$
II. $20q^{2}+9q=-1$
a) Give answer (A) if p is greater than q.
b) Give answer (B) if p is smaller than q.
c) Give answer (C) if p is equal to q.
d) Give answer (D) if p is either equal to or greater than q.
e) Give answer (E) if p is either equal to or smaller than q.
Question 12: I. $3p^{2}+2p-1=0$ II. $2q^{2}+7q+6=0$
a) Give answer (A) if p is greater than q.
b) Give answer (B) if p is smaller than q.
c) Give answer (C) if p is equal to q.
d) Give answer (D) if p is either equal to or greater than q.
e) Give answer (E) if p is either equal to or smaller than q.
Question 13: I. $3p^2+15p=-18$ II. $q^2+7q+12=0$
a) Give answer (A) if p is greater than q.
b) Give answer (B) if p is smaller than q.
c) Give answer (C) if p is equal to q.
d) Give answer (D) if p is either equal to or greater than q.
e) Give answer (E) if p is either equal to or smaller than q.
Question 14: I. $p=\frac{\sqrt{4}}{\sqrt{9}}$ II. $9q^{2}-12q+4=0$
a) Give answer (A) if p is greater than q.
b) Give answer (B) if p is smaller than q.
c) Give answer (C) if p is equal to q.
d) Give answer (D) if p is either equal to or greater than q.
e) Give answer (E) if p is either equal to or smaller than q.
Question 15: I. $p^{2}+13p+42=0$ II. $q^{2}=36$
a) Give answer (A) if p is greater than q.
b) Give answer (B) if p is smaller than q.
c) Give answer (C) if p is equal to q.
d) Give answer (D) if p is either equal to or greater than q.
e) Give answer (E) if p is either equal to or smaller than q.
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Answers & Solutions:
1) Answer (A)
$2a^{2}+a-1=0$
We get the factor as:
a=-1, a=0.5
$12b^{2}-17b+6=0$
Solving, we get the factor as,
b= 1.5, b= .75
Hence, b>a
Option A is correct option.
2) Answer (B)
Soving the quadratic equations we get,
$a^{2}-5a+6=0$
i.e (a-2)(a-3)=0
i.e a=2, a=3
$2b^{2}-13b+21=0$
i.e (b-3.5)(b-3)=0
i.e b= 3.5 and b=3
Hence, we can deduce that $a\leq b$
Therefore, option B is correct.
3) Answer (E)
$a^{2}+5a+6=0$
i.e (a+2)(a+3)=0
i.e a=-2, a=-3
.$b^{2}+7b+12=0$
i.e (b+4)(b+3)=0
i.e b=-4, b=-3
Hence, we can deduce that $a \geq b$.
Therefore, option E is correct.
4) Answer (D)
$16a^{2}=1$
Solving we get, a=-.25, a=+.25
$3b^{2}+7b+2=0$
Solving we get, b= -2. b = -1/3
Hence, a>b. Option D is correct.
5) Answer (C)
We can easily solve equation I to get a = -1
But we cannot solve $b^{2}=\pm4$. Square root of negative number is not a real number.
Hence, we cannot find a value of b. Therefore, we cannot establish a relationship between a and b.
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6) Answer (B)
$p^2-7p+12 = 0$
$(p-3)(p-4) = 0$
$p = 3, 4$
$q^2-3q+2 = 0$
$(q-1)(q-2) = 0$
$q = 1, 2$
$\therefore p > q$
7) Answer (A)
$12p^2-7p+1 = 0$
$(4p-1)(3p-1) = 0$
$p = \frac{1}{3}, \frac{1}{4}$
$6q^2-7q+2 = 0$
$(2q-1)(3q-2) = 0$
$q = \frac{1}{2}, \frac{2}{3}$
$\therefore p < q$
8) Answer (E)
$p^2+12p+35 = 0$
$(p+5)(p+7) = 0$
$p = -5, -7$
$2q^2+22q+56 = 0$
$q^2+11q+28 = 0$
$(q+4)(q+7) = 0$
$q = -4, -7$
As we can see $p$ can be greater than, less than or equal to $q$. No relationship can be established between $p$ and $q$ and hence, option E is the right answer.
9) Answer (D)
$p^2-8p+15 = 0$
$(p-3)(p-5) = 0$
$p = 3, 5$
$q^2-5q+6 = 0$
$(q-2)(q-3) = 0$
$q = 2, 3$
$p\geq q$
10) Answer (C)
$2p^2+20p+50 = 0$
$p^2+10p+25 = 0$
$(p+5)^2 = 0$
$p = -5$
$q^2 = 25$
$q = 5, -5$
$p\leq q$
11) Answer (B)
$6p^2+5p+1 = 0$
$(2p+1)(3p+1) = 0$
$p = -\frac{1}{2}, -\frac{1}{3}$
$20q^2+9q+1 = 0$
$(4q+1)(5q+1) = 0$
$q = -\frac{1}{4}, -\frac{1}{5}$
$p < q$
12) Answer (A)
$3p^2+2p-1 = 0$
$(3p-1)(p+1) = 0$
$p = -1, \frac{1}{3}$
$2q^2+7q+6 = 0$
$(2q+3)(q+2) = 0$
$q = -2, -\frac{3}{2}$
p > q
13) Answer (D)
$3p^2+15p+18 = 0$
$p^2+5p+6 = 0$
$(p+2)(p+3) = 0$
$p = -3, -2$
$q^2+7q+12 = 0$
$(q+4)(q+3) = 0$
$q = -4, -3$
$p\geq q$
14) Answer (C)
$p = \frac{\sqrt{4}}{\sqrt{9}}$
$p = \frac{2}{3}$
$9q^2-12q+4 = 0$
${(3q-2)}^2 = 0$
$q = \frac{2}{3}$
p = q
15) Answer (E)
$p^2+13p+42 = 0$
$(p+6)(p+7) = 0$
$p = -6, -7$
$q^2 = 36$
$q = -6, 6$
$p\leq q$
