Question

calcule a expressão √8 + √18

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Answer 1

$\sqrt{8}$ = $\sqrt{2^{2}. 2 }$      

 $\sqrt{18}$ = $\sqrt{3^{2} . 2 }$    

$\sqrt{2^{2} . 2 }$  + $\sqrt{3^{2} . 2 }$

2.$\sqrt{2}$ + 3.$\sqrt{2}$

(2 + 3 ). $\sqrt{2}$

5.$\sqrt{2}$

$\sqrt{8}$ + $\sqrt{18}$ = 5.$\sqrt{2}$

Bons estudos !