Question

$\sqrt{128}$

Explanation:

Step1: Factor 128 into square factor

$128 = 64 \times 2$

Step2: Split square root into product

$\sqrt{128} = \sqrt{64 \times 2} = \sqrt{64} \times \sqrt{2}$

Step3: Simplify $\sqrt{64}$

$\sqrt{64} = 8$

Step4: Combine terms

$8 \times \sqrt{2} = 8\sqrt{2}$

Answer:

$8\sqrt{2}$