Question

$x = \sqrt{196 \div (( - 35) \div ( - 5))}$

qual é o valor de x?
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Answer 1

Resposta:

$x = \sqrt{196 \div (( - 35) \div ( - 5))} =\\\\x=\sqrt{\frac{196}{\left(\frac{\left(-35\right)}{\left(-5\right)}\right)}}\\\\x=\sqrt{28}\\\\x=\sqrt{2^2\cdot \:7}\\\\x=\sqrt{7}\sqrt{2^2}\\\\x=2\sqrt{7}$