Question 14

If X=1.1, then what is the value of $$\sqrt{4x^2-4x+1}$$ ?

Solution

Expression : $$\sqrt{4x^2-4x+1}$$

= $$\sqrt{(2x-1)^2}=(2x-1)$$ -------------(i)

It is given that $$x=1.1$$, substituting it in equation (i),

=> $$2(1.1)-1=2.2-1=1.2$$

=> Ans - (D)

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