Question

Route 72 + root 800 - root 18

Answer 1

√72+√800-√18
= √36×2+√400×2-√9×2
= 6√2 + 20√2-3√2
= 6+20-3(√2)
= 26- 3(√2)
= 23√2
The answer is 23√2

#BeBrainly

Answer 2

$\sqrt{72 \: } = 6 \sqrt{2}$
$\sqrt{800} = 10 \sqrt{2}$
$\sqrt{18} = 3 \sqrt{2}$
therefore
$6 \sqrt{2} + 10 \sqrt{2} - 3 \sqrt{2} = 13 \sqrt{2}$