Question

2√125 + 7√80 - √1125
Simplify in a step by step manner

Answer 1

$2\sqrt[]{125} + 7 \sqrt{80} - \sqrt{1125} \\ = 2 \times 5 \sqrt{5 } +7 \times 4 \sqrt{5} + 15 \sqrt{5} \\ = 10 \sqrt{5} + 28 \sqrt{5 } - 15 \sqrt{5 } \\ = 38 \sqrt{5} - 15 \sqrt{5} \\ = 23 \sqrt{5}$