Question

Evaluate the expression if y=4 y^2 + 18

Answer 1

Answer:

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Step-by-step explanation:

if y=4

then y²+18

=4²+18

=16+18

=34

Answer 2

take y to the other side you will get

4y^2-y+18

18×4=72

factors of 72 = 2×2×2×3×3

i.e 9,8

4y^2 +8y -9y +18

4y(y+2) -9(y+2)

therefore answer is (4y-9)(y+2)