Question

URGENT ANSWER NEEDED WILL MARK AS BRAINLIEST

Answer 1

Answer:

I think the answer is 16x^2+16x-5

Answer 2

Find : (4x+5)(4x-1)

Identity to use : (x+a)(x+b) = x² + x(a+b) + ab

x = 4x

a = 5

b = (-1)

Substituting the values,

(4x)² + 4x[5+(-1)] + (5)×(-1)

16x² + 4x(4) - 5

16x² + 16x - 5

Therefore option (d) is correct.

Hope it helps

have a great day