Question

Calcule

a) (3 + x)² =

b) ( x + y)² =

Answer 1

A) 9 + 6x + x2
B) x2 + 2xy + y2

Answer 2

RESPOSTA:

a)

(3+x)(3+x)=

9+3x+3x+x²=

9+6x+x²

b)

(x + y)²

(x + y)(x + y)

x² + xy + xy + y²

x² + 2xy + y²

ABRAÇOS!