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50\times 9.81=x^{2}
Multiply both sides of the equation by 1000.
490.5=x^{2}
Multiply 50 and 9.81 to get 490.5.
x^{2}=490.5
Swap sides so that all variable terms are on the left hand side.
x=\frac{3\sqrt{218}}{2} x=-\frac{3\sqrt{218}}{2}
Take the square root of both sides of the equation.
50\times 9.81=x^{2}
Multiply both sides of the equation by 1000.
490.5=x^{2}
Multiply 50 and 9.81 to get 490.5.
x^{2}=490.5
Swap sides so that all variable terms are on the left hand side.
x^{2}-490.5=0
Subtract 490.5 from both sides.
x=\frac{0±\sqrt{0^{2}-4\left(-490.5\right)}}{2}
This equation is in standard form: ax^{2}+bx+c=0. Substitute 1 for a, 0 for b, and -490.5 for c in the quadratic formula, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{0±\sqrt{-4\left(-490.5\right)}}{2}
Square 0.
x=\frac{0±\sqrt{1962}}{2}
Multiply -4 times -490.5.
x=\frac{0±3\sqrt{218}}{2}
Take the square root of 1962.
x=\frac{3\sqrt{218}}{2}
Now solve the equation x=\frac{0±3\sqrt{218}}{2} when ± is plus.
x=-\frac{3\sqrt{218}}{2}
Now solve the equation x=\frac{0±3\sqrt{218}}{2} when ± is minus.
x=\frac{3\sqrt{218}}{2} x=-\frac{3\sqrt{218}}{2}
The equation is now solved.