Question

(2-x)(x-3)=(x+1)-9 (esse x+1 elevado a potência 2)

Answer 1

Resposta:

(2-x)*(x+3)=(x+1)²-9

2x+6-x²-3x=x²+2x+1-9

6-3x=2x²-8

2x²+3x-14=0

x'=[-3+√(9+112)]/4 =(-3+11)/4=8/4=2

x''=[-3-√(9+112)]/4 =(-3-11)/4=-7/2