The answer to the problem is:
<span>8j^3 + 5j^2 - 3 - 5j^3 - 7j^2 + 12j - 7
</span>
<span>3j^3 - 2j^2 + 12j - 10
</span>
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X=1
solve for x by simplifying both sides
A raiz de -9 = a +-3
ou seja 5+3=8
5-3=2
