Question

using suitable identity to find (4x+5) (4x-1)

Answer 1

Answer:

16x^2+16x-5

Step-by-step explanation:

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

wkt

(x+a)(x+b)=x^2+x(a+b)+ab

x=4x,. a=5,. b=-1

(4x+5) (4x-1)=(4x)^2+4x{5+(-1)}+5 . -1

=16x^2+16x-5

I Hope it help!!