Instructions

In each of these Question two quantities are given, one in column A and one in column B.

Compare the two quantities.

Question 85

Given Information
x = -2

Column A
$$3x^2 + 2x - 1$$

Column B
$$x^3 + 2x^2 + 1$$

Solution

x = -2

Column A:

$$3x^2 + 2x - 1$$

$$3*(-2)^2 + 2(-2) -1$$

$$12-4-1$$

$$7$$

Column B:

$$x^3 + 2x^2 + 1$$

$$(-2)^3 + 2(-2)^2 +1$$

$$-8+8+1$$

$$1$$

So, Quantity A > Quantity B

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Given Information x = -2 Column A$$3x^2 + 2x - 1$$ Column B $$x^3 + 2x^2 + 1$$