Question

If 2 is a zero of polynomial f(x)=4x square+4x-4a,then find the value of a.

Plz help me...........

Answer 1

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Answer 2

zero of this function is 2

it means x = 2

f(x) =

$4x { }^{2} + 4x - 4a$

f(2) = 4× 2×2 +4×2-4a

0 = 16+8-4a

-24= -4a

so a = -24/-4 = 6

hence the value of a = 6

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