Question

Calcule:
a) (x+y)²
b) (x+2)²
c) (x-y)²
d) (y-3)²
e) (x+y).(x-4)
f) (x+y)³

Answer 1

Resposta:

a) x²+2xy+y²

b)x²+4x+4

c)x²-2xy+y²

d)y²-6y+9

e)x²-4x+xy-4y

f)x³+3x²y+3xy²+y³