Question

√32 + 4 √8 - √50 - (√2) elevado a 3

Answer 1

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$\sqrt{32} +4 \sqrt{8} - \sqrt{50} - \sqrt{2^3} = \\ \\ \sqrt{2^4.2} +4 \sqrt{2^2.2} - \sqrt{2.5^2} - \sqrt{2^2.2} = \\ \\ 2^2 \sqrt{2} +4.2 \sqrt{2} -5 \sqrt{2} -2 \sqrt{2} = \\ \\ 4 \sqrt{2} +8 \sqrt{2} -5 \sqrt{2} -2 \sqrt{2} = \\ \\ 12 \sqrt{2} -7 \sqrt{2} = \\ \\ 5 \sqrt{2}$