1) calcule o quadrado das somas abaixo: a) ( 3y+3x)²=
b) (-5+n)²=
c) (-3x+5)²=
d) (a+ab)²=
e) (2x+xy)²=
f) (a²+1)²=
g) (a²+b²)²=
b) (-5+n)²=
c) (-3x+5)²=
d) (a+ab)²=
e) (2x+xy)²=
f) (a²+1)²=
g) (a²+b²)²=
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a)
( 3y+3x)²=
(3y + 3x)(3y + 3x) =
9y² + 9xy + 9xy + 9x²
9y² + 18xy + 9x²
b)
(-5+n)²=
(-5 + n)(-5 + n)
+ 25 - 5n - 5n + n²
25 - 10n + n²
c) (-3x+5)²=
( - 3x + 5)(- 3x + 5)
+ 9x² - 15x- 15x + 25
9x² - 30x + 25
d)
(a+ab)²=
e) (2x+xy)²=
(2x + xy)(2x + xy)
4x² + 2x²y +2x²y + x²y²
4x² + 4x²y + x²y²
f)
(a²+1)²=
(a² + 1)(a² +1)
a⁴ + 1a² + 1a² + 1
a⁴ + 2a² + 1
g)
(a²+b²)²=
(a² + b²)(a² + b²)
a⁴ + a²b² + a²b² + b⁴
a⁴ + 2a²b² + b⁴