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Evaluate the powers of (1)/(sqrt(2)).

Mathematics

ScanSolve AI Answer

Answer

1−21 - \sqrt{2}

Step-by-step solution

6 steps
  1. Evaluate the powers of 12\frac{1}{\sqrt{2}}.

    (12)3=13(2)3=122\left(\frac{1}{\sqrt{2}}\right)^3 = \frac{1^3}{(\sqrt{2})^3} = \frac{1}{2\sqrt{2}}
  2. Substitute this value back into the expression.

    2(122)−3(12)+12\left(\frac{1}{2\sqrt{2}}\right) - 3\left(\frac{1}{\sqrt{2}}\right) + 1
  3. Simplify the terms.

    222−32+1=12−32+1\frac{2}{2\sqrt{2}} - \frac{3}{\sqrt{2}} + 1 = \frac{1}{\sqrt{2}} - \frac{3}{\sqrt{2}} + 1
  4. Combine the fractions.

    1−32+1=−22+1\frac{1-3}{\sqrt{2}} + 1 = \frac{-2}{\sqrt{2}} + 1
  5. Rationalize the denominator of the fraction.

    −22×22=−222=−2\frac{-2}{\sqrt{2}} \times \frac{\sqrt{2}}{\sqrt{2}} = \frac{-2\sqrt{2}}{2} = -\sqrt{2}
  6. Perform the final addition.

    −2+1=1−2-\sqrt{2} + 1 = 1 - \sqrt{2}

    The simplified expression is:

    1−21 - \sqrt{2}
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