Question

Simplifique as expressões:
a) (-2a-3b)²-(2a-3b)²
b) (x-2)². (x+2)²
c) (-x+1)²+(-x-1)²
d) 3x(x-1)²+3x²(1-x)

Answer 1

Simplifique as expressões:

a) (-2a-3b)²-(2a-3b)²

(-4a)*(-6b)=>

24ab


b) (x-2)². (x+2)²

((x-2) *(x+2))²=>

( x² - 4 )²=>

=>x^4 - 8x^2 + 16



c) (-x+1)²+(-x-1)²=>

1-2x+x^2 + (-x)^2 +2x+1=>

2+x^2 + x^2=>

2+2x^2


d) 3x(x-1)²+3x²(1-x)

-3x.(x+1)