Question

a) √7+2√7+5√7 b)3√5-5√5+6√5-√5 please show the method it is very important​

Answer 1

Answer:

$\sqrt{7} + 2 \sqrt{7} + 5 \sqrt{7} \\ \\ = \sqrt{7} (1 + 2 + 5) = 8 \sqrt{7} \: ans \\ \\ \\ 3 \sqrt{5} - 5 \sqrt{5} + 6 \sqrt{5} - \sqrt{5} = 3 \sqrt{5} ans$