Question

Simplifique as expressões algébricas:.
a) (x-y)²-x(x-2y)
b) (x-2)²+a(3a+2)
c) (m+1) (m-1)+(m+1)²-2m
d) (x+a²) (x-a²)+a²(a²-1)
e) (a+b)²-(a-b)²-4ab

Answer 1

a)
x²-2xy+y²-x²+2xy=y²

b)
x²-4x+4+3a²+2a

c)
m²-m+m-1+m²+2m+1-2m=2m²

d)
x²-xa²+xa²-a^4+a^4-a²
x²-a²

e)
a²+2ab+b²-a²-2ab+b²-4ab
2b²-4ab ou 2(b²-2ab)