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fatoração a3−64
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Solution
(a−4)(a2+4a+16)
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a3−64
Reescrever 64 como 43
=a3−43
Aplicar a regra da diferença de cubos: x3−y3=(x−y)(x2+xy+y2)
a3−43=(a−4)(a2+4a+42)
=(a−4)(a2+4a+42)
42=16
=(a−4)(a2+4a+16)
Number Line
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