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Removing the variable's exponent
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$\sqrt{\left(3x+5\right)^2}=\pm \sqrt{9}$
Learn how to solve quadratic equations problems step by step online. Solve the quadratic equation (3x+5)^2=9. Removing the variable's exponent. Cancel exponents 2 and \frac{1}{2}. The square root of 9 is . We need to isolate the dependent variable x, we can do that by simultaneously subtracting 5 from both sides of the equation.