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Walace244
@Walace244
January 2020
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Calcule o quadrado da soma
a) (5+3x)²
b)(2x+y)²
c)(r+4s)²
d)(y³+3)²
e)(x+2y³)²
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TheMaverick
Quadrado da soma (x + y)² =
“O primeiro termo elevado ao quadrado mais o dobro do primeiro termo multiplicado pelo segundo termo mais o segundo termo elevado ao quadrado.”
a)
(5+3x)² =
5² + 2×5×3x + (3x)² =
25 + 30x + 9x²
b)
(2x+y)² =
(2x)² + 2×2x×y + y² =
4x² + 4xy + y²
c)
(r+4s)² =
r² + 2×r×4s + (4s)² =
r² + 8sr + 16s²
d)
(y³+3)² =
(y³)² + 2×y³×3 + 3² =
y⁶ + 6y³ + 9
e)
(x+2y³)² =
x² + 2×x×2y³ + (2y³)²
x² + 4y³x + 2y⁶
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a)
(5+3x)² =
5² + 2×5×3x + (3x)² =
25 + 30x + 9x²
b)
(2x+y)² =
(2x)² + 2×2x×y + y² =
4x² + 4xy + y²
c)
(r+4s)² =
r² + 2×r×4s + (4s)² =
r² + 8sr + 16s²
d)
(y³+3)² =
(y³)² + 2×y³×3 + 3² =
y⁶ + 6y³ + 9
e)
(x+2y³)² =
x² + 2×x×2y³ + (2y³)²
x² + 4y³x + 2y⁶