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Roecharles2012
@Roecharles2012
May 2020
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O quadrado de um numero x,menos 8,é igual a 6?
a resposta é x²-x+15=0
mas preciso saber a conta(fórmula)
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deboraandradevz
(x-8)² = 6
x² + 2 * x *(-8) + (-8)² = 6
x² - 16x + 64 - 6 = 0
x² - 16x +58 = 0
23 votes
Thanks 44
gsmelzinha
X² - 8 = 6
x² = 6 + 8
x² = 14
fatorando fica 2x7
12 votes
Thanks 26
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x² + 2 * x *(-8) + (-8)² = 6
x² - 16x + 64 - 6 = 0
x² - 16x +58 = 0
x² = 6 + 8
x² = 14
fatorando fica 2x7