Question

Simplify 2 √81 − 8 √216 + 15 √32 + √225 − √16
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Answer 1

$2 \sqrt{81} - 8 \sqrt{216} + 15 \sqrt{32} + \sqrt{225} \: \: \: - \sqrt{16} \\ \\ = 2 \times 9 - 8 \times 6 \sqrt{6} + 60 \sqrt{2} - 4 \\ \\ = 18 \: - 48 \sqrt{6} + 60 \sqrt{2} - 4 \\ \\ = 60 \sqrt{2} - 48 \sqrt{6} + 14$

Answer 2

Answer:

   2√81 − 8√216 + 15√32 + √225 − √16

= 2*9 - 8*6√6 + 15*4√2 + 15 - 4

= 18 - 48√6 + 60√2 + 11

= 18+11-48√6+60√2

= 29-48√6+60√2

Step-by-step explanation: