Question

Expand & simplify ( 3 x + 2 ) (3x+2) − ( x + 4 ) ( x − 3 )

Answer 1

Answer:

(3x+2)² -(x+4)(x-3)

= 9x²+4+12x - (x²+(4-3)x (4)(-3))

=9x²+4+12x -x² -x -12

=8x²+11x-8

Step-by-step explanation:

used identities:

(a+b)²=a²+b²+2ab

(x+a)(x+b)=x²+(a+b)x+ab