Hoppin647
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# what is the exact value of the expression the square root 72. − the square root of 8. the square root of 128.? simplify if possible.

$\sqrt{72} = \sqrt{36 \times 2} = \sqrt{36} \times \sqrt{2} = 6 \times \sqrt{2} = 6 \sqrt{2}$ $\sqrt{8} = \sqrt{4 \times 2} = \sqrt{4} \times \sqrt{2} = 2 \times \sqrt{2} = 2 \sqrt{2}$ $\sqrt{128} = \sqrt{64 \times 2} = \sqrt{64} \times \sqrt{2} = 8 \times \sqrt{2} = 8 \sqrt{2}$