Question

Find the product by using the suitable identities
(4x+5) 4x-7)

Answer 1

hi mate your answer

(4x+5) (4x-5) =(4x) ^2-5^2

=16x^2-25

hope that it will help you

Answer 2

Answer:

Step-by-step explanation:

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

(4x+5)(4x-7)=(4x)^2+(5-7)4x-(5×7)

=16x^2+(-2)×4x-(35)

=16x^2-8x-35