Question

identify the error in the followig a). (2x+3)(2x-3)=4x^2+9​

Answer 1

Answer:

4x^2 - 9

Step-by-step explanation:

2x +3 )(2x -3) is in the form (x+y) (x - y)

( x+y) (x- y) = x^2 - y^2

(2x +3 )(2x -3) = 2x^2 - 3^2

= 4x^2 - 9