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x=18\sqrt{11} x=-18\sqrt{11}
Take the square root of both sides of the equation.
x^{2}-3564=0
Subtract 3564 from both sides.
x=\frac{0±\sqrt{0^{2}-4\left(-3564\right)}}{2}
This equation is in standard form: ax^{2}+bx+c=0. Substitute 1 for a, 0 for b, and -3564 for c in the quadratic formula, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{0±\sqrt{-4\left(-3564\right)}}{2}
Square 0.
x=\frac{0±\sqrt{14256}}{2}
Multiply -4 times -3564.
x=\frac{0±36\sqrt{11}}{2}
Take the square root of 14256.
x=18\sqrt{11}
Now solve the equation x=\frac{0±36\sqrt{11}}{2} when ± is plus.
x=-18\sqrt{11}
Now solve the equation x=\frac{0±36\sqrt{11}}{2} when ± is minus.
x=18\sqrt{11} x=-18\sqrt{11}
The equation is now solved.