Question

a) (x+9) . (x-8)

b) (x+2) . (x+1)

c) (X+6) . (x+4)

alguém me ajude, por favor.

Answer 1

Resposta:

a) x-72

b) x2

c) x24

Answer 2

$a) (x+9)\cdot(x-8)=\\x^2-8x+9x-72=\\x^2+x-72\\\\b) (x+2)\cdot(x+1)=\\x^2+x+2x+2=\\x^2+3x+2\\\\c) (x+6)\cdot(x+4)=\\x^2+4x+6x+24=\\x^2+10x+24$