How do you simplify $\sqrt{7} (2 \sqrt{3} + 3 \sqrt{7})$ $sqrt7(2sqrt3+3sqrt7)$ ?

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Answer 1 · 2017-02-11T12:41:32

$2 \sqrt{21} + 21$ $2sqrt21+21$

Since

$\sqrt{a} \cdot \sqrt{b} = \sqrt{a b}$ $sqrta*sqrtb=sqrt(ab)$

and

$\sqrt{a} \cdot \sqrt{a} = a$ $sqrta*sqrta=a$ ,

the given expression is:

$2 \sqrt{21} + 3 \cdot 7 =$ $2sqrt21+3*7=$

$= 2 \sqrt{21} + 21$ $=2sqrt21+21$

How do you simplify sqrt7(2sqrt3+3sqrt7)√7(2√3+3√7)sqrt7(2sqrt3+3sqrt7)?