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We need to isolate the dependent variable , we can do that by simultaneously subtracting $\left(y-4\right)^2$ from both sides of the equation
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$\left(x+3\right)^2=21-\left(y-4\right)^2$
Learn how to solve equations problems step by step online. Solve the equation (x+3)^2+(y-4)^2=21. We need to isolate the dependent variable , we can do that by simultaneously subtracting \left(y-4\right)^2 from both sides of the equation. Removing the variable's exponent. Cancel exponents 2 and \frac{1}{2}. We need to isolate the dependent variable , we can do that by simultaneously subtracting 3 from both sides of the equation.