Question

find sum of
$3 \sqrt{7}$
and
$5 \sqrt{7}$
pls don't give direct answer pls solve and give the answers​

Answer 1

Answer:

3√7+5√7= ( 3+5)√7

= 8√7

if you want in decimals it is:

8*2.64575131106

= 21.1660104885

so 3√7+5√7= 8√7 or 21.1660104885

Answer 2

3

$3 \sqrt{7 } + 5 \sqrt{7}$

$(3 + 5) + ( \sqrt{7} + \sqrt{7})$

$8 + ( \sqrt{7} + ( \sqrt{7}$

$8 + ( \sqrt{7})^{2}$

$8 + 7 = 15$

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