Question

simplifique as expressoes (x-3)2 -(x+2)2 +(x+3)(x-1)

Answer 1

Explicação passo-a-passo:

(x-3)² - (x+2)² + (x+3).(x-1)=

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

x² -3x-3x +9 - (x² +2x +2x +4)+x² -x +3x-3

x² -6x +9 -x² -4x -4 +x² +2x -3=

-6x+9 -4x -4 +x² +2x-3=

x² -10x +9 -4 +2x -3=

x² -8x +2