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Rearrange the equation
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$\left(x+7\right)^2-81=25\left(x+2\right)^2$
Learn how to solve problems step by step online. Solve the quadratic equation 25(x+2)^2=(x+7)^2-81. Rearrange the equation. We need to isolate the dependent variable , we can do that by simultaneously subtracting -81 from both sides of the equation. Expand \left(x+7\right)^2. Move everything to the left hand side of the equation.