Question

calculo combinado

5.(-8+4)-12÷(-6)+20÷(1-6)
$\sqrt{ {2}^{2}.11 + (12 - 2) {?}^{2} }$
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Answer 1

I.-

(-8+4)-12÷(-6)+20÷(1-6)

$\left(-8+4\right)-12\div \left(-6\right)+20\div \left(1-6\right)$

$=-4-12\div \left(-6\right)+20\div \left(1-6\right)$

$=-4-12\div \left(-6\right)+20\div \left(-5\right)$

$=-4-\left(-2\right)+20\div \left(-5\right)$

$=-4-\left(-2\right)-4$

$=-4+2-4$

$=-2-4$

$=-6$

II.-

$\sqrt{2^2\cdot \:11+\left(12-2\right)^2}$

$=\sqrt{2^2\cdot \:11+10^2}$

$=44$

$=100$

$=\sqrt{44+100}$

$=\sqrt{144}$

$=12$

Explicación paso a paso:

espero te sirva, coronita plis :)