Question

Evaluate √72 + √18 with answers written in roots

Answer 1

Answer :

$\sqrt{72} + \sqrt{18} \\ \\ \sqrt{2 \times 2 \times 2 \times 3 \times 3} + \sqrt{2 \times 3 \times 3} \\ \\ 2 \times 3 \sqrt{2} + 3 \sqrt{2} \\ \\ 6 \sqrt{2} + 3 \sqrt{2} \\ \\ 9 \sqrt{2}$

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Answer 2

$\sqrt{72} + \sqrt{18}$

$\sqrt{2 \times 2 \times 2 \times 3 \times 3} + \sqrt{2 \times 3 \times 3}$

$6 \sqrt{2} + 3 \sqrt{2}$

$9 \sqrt{2}$