Question

1-
3√4.5√7

2-

√90
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√2

3-

2
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√2

Answer 1

Resposta:

1) = $28\sqrt{7}$;

2) = $3\sqrt{5}$;

3) $\sqrt{2}$

Explicação passo-a-passo:

1) 3*4*$\sqrt{4*7}$ =

= 12$\sqrt{28}$ =

= $12\sqrt{4*7}$ =

= $12*2\sqrt{7}$ =

= $28\sqrt{7}$

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2) $\sqrt{90/2}$ =

= $\sqrt{45}$ =

= $\sqrt{9*5}$ =

= $3\sqrt{5}$

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3) 2*$\sqrt{2}$/ $\sqrt{2} * \sqrt{2}$ =

= $2\sqrt{2}/\sqrt{4}$ =

= $2\sqrt{2}/2$ =

= $\sqrt{2}$