Question

Simplify 7 square root 2 + 5 square root 8

Answer 1

Answer:

Step-by-step explanation:

$7 \sqrt{2} + 5 \sqrt{8}$

but  $\sqrt{8} = \sqrt{4 * 2} = 2 \sqrt{2}$

 ∴  $5 \sqrt{8} = 5 \times 2 \sqrt{2} = 10 \sqrt{2}$

Now,

    $7 \sqrt{2} + 5 \sqrt{8}$

    $7 \sqrt{2} + 10 \sqrt{2} = 17 \sqrt{2}$