Question

a) (3 + x)²
b) (x + 5)²
c) (x + y)²
d) (x + 2)²
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Answer 1

Resposta:

A) (3+x)² = (3+x).(3+x) = (x²+6x+9)

B) (x+5)² = (x+5).(x+5) = (x²+10x+25)

C) (x+y)² = (x+y).(x+y) = (x²+2xy+y²)

D) (x+2)² = (x+2).(x+2) = (x²+4x+4)