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Removing the variable's exponent
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$\sqrt[4]{r^4}=\pm \sqrt[4]{4}$
Learn how to solve equations problems step by step online. Solve the equation r^4=4. Removing the variable's exponent. Cancel exponents 4 and \frac{1}{4}. As in the equation we have the sign \pm, this produces two identical equations that differ in the sign of the term \sqrt[4]{4}. We write and solve both equations, one taking the positive sign, and the other taking the negative sign. Combining all solutions, the 2 solutions of the equation are.