Solve for y y^4=81

Math
y4=81
Take the 4th root of both sides of the equation to eliminate the exponent on the left side.
y=±814
The complete solution is the result of both the positive and negative portions of the solution.
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Simplify the right side of the equation.
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Rewrite 81 as 34.
y=±344
Pull terms out from under the radical, assuming positive real numbers.
y=±3
y=±3
The complete solution is the result of both the positive and negative portions of the solution.
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First, use the positive value of the ± to find the first solution.
y=3
Next, use the negative value of the ± to find the second solution.
y=-3
The complete solution is the result of both the positive and negative portions of the solution.
y=3,-3
y=3,-3
y=3,-3
Solve for y y^4=81

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