Question

01- CALCULE OS PRODUTOS NOTAVEIS :
A)(X+4)² =

B)(X - 4) ² =


C)(X + 4) . (X - 4)=


D) (2x + 1)² =

Answer 1

a) (x+4)² = x² +2.(x).(4) + 4² = x² + 8x +16

b) (x-4)² = x² - 2.(x).(4) + 4² = x² - 8x +16

c) (x+4).(x-4) = x² -4x + 4x - 16 = x² -16

d) (2x + 1)² = (2x)² + 2.(2x).(1) + 1² = 4x² + 4x +1