Question

resolva a expressão (×+1) (×+2) -2 (×+2) (×+3).​

Answer 1

Explicação passo-a-passo:

(x+1).(x+2) - 2.(x+2).(x+3)=

x² +2x +1x +2 - 2.(x²+3x +2x +6)=

x² +3x +2 - 2.(x²+5x +6)=

x² +3x +2 - 2x² -10x - 12=

- x² - 7x - 10=

x²+7x +10