Question

Use the identity (x + a)(x+b) = x² + (a + b)x + ab to find the following products. (4x + 5)(4x + 1)​

Answer 1

Answer:

Correct option is D)

Given: (4x−5)(4x−1)

Using,(x+a)(x+b)=x

2

+(a+b)x+ab we get,

=16x

2

+(−5−1)4x+(−5)(−1)

=16x

2

−24x+5

Answer 2

Answer:

Please mark me as brain list

Step-by-step explanation:

(4x + 5)(4x + 1) = (4x)² + (5+1)4x + (5×1)

= 16x² + 24x + 5

16x² + 24x + 5 Ans.