Question

find the answer of : (2x +3) (2x+7) using 4 th property​

Answer 1

Answer:

4x² + 20x + 21.

Step-by-step explanation:

Id. used = (x + a) (x + b) = x² + (a + b) x + ab;

( x = 2, a = 3, b = 7 )

(2x + 3) (2x + 7) = (2x)² + (3 + 7) (2) + 3 × 7

= 4x² + 20x + 21.

I hope it helps you ✌️...