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Removing the variable's exponent raising both sides of the equation to the power of $3$
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$x^2+20x=125$
Learn how to solve quadratic equations problems step by step online. Solve the quadratic equation (x^2+20x)^1/3=5. Removing the variable's exponent raising both sides of the equation to the power of 3. Rewrite the equation. Factor the trinomial x^2+20x-125 finding two numbers that multiply to form -125 and added form 20. Thus.