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Renanch7
@Renanch7
October 2020
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preciso de uma ajuda aqui ? 10 pontos
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schoulten
(x+y)² = 100
x²+y² = 68
xy = ?
(x+y)² = x²+2xy+y² = 100
x²+y²+2xy = 100
68+2xy = 100
2xy = 100-68
xy = 32/2
xy = 16
Espero ter ajudado, bons estudos ;)
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x²+y² = 68
xy = ?
(x+y)² = x²+2xy+y² = 100
x²+y²+2xy = 100
68+2xy = 100
2xy = 100-68
xy = 32/2
xy = 16
Espero ter ajudado, bons estudos ;)