Question

(x+5)(x+2) - (x+9)(x-2) Ayuda porfa

Answer 1

(x+5)(x+2) - (x+9)(x-2)

x²+5x+2x+5.2- (x²-2x+9x-9.2)

x²+5x+2x+10-(x²+7x-18)

x²+5x+2x+10-x²-7x+18

2x+5x+10-7x+18

7x-7x+10+18

0+10+18=28