Question

(3x-9)(3x+8)=??
(X-5)(X-7)=??
(2x-9)(2x+5)=??
(X+5)(X-7)=??
(X-7)(X-3)=??

Answer 1

1) 9x²+24x-27x-72 = 9x²-3x-72

2) x²-7x-5x+35 = x²-12x+35

3) 4x²+10x-18x+45 = 4x²-8x+45

4) x²-7x+5x-35 = x²-2x-35

5) x²-3x-7x+21 = x²-10x+21

Espero te sirvan mucho !!!! :)