Question

1) "calcule" os quadrados
A) ( x + y )²=
B) (A + 7 )²=
C) (10x + y)²=
D)(5x² + 1)²=

Answer 1

Resposta:

A) ( x + y )²=

x²+2xy+y²

B) (A + 7 )²=

a²+2.7a+7²

a²+14a+49

C) (10x + y)²=

10²x²+2.10xy+y²

100x²+20xy+y²

D)(5x² + 1)²=

(5x²)²+2.5x².1+1²

25x⁴+10x²+1