tasha97
tasha97
18-12-2014
Mathematics
contestada
√81x^4
I need to know how to solve it to
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konrad509
konrad509
18-12-2014
[tex]\sqrt{81x^4}=\sqrt{81}\cdot\sqrt{x^4}=9x^2[/tex]
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Аноним
Аноним
22-12-2014
[tex]\sqrt{81x^4}=\sqrt{81}\cdot\sqrt{x^4}=\sqrt{9^2}\cdot\sqrt{(x^2)^2}=\boxed{9x^2}\\\\use:\sqrt{a^2}=a\ where\ a \geq 0[/tex]
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