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\frac{3}{4}x^{2}=192
Multiply x and x to get x^{2}.
x^{2}=192\times \frac{4}{3}
Multiply both sides by \frac{4}{3}, the reciprocal of \frac{3}{4}.
x^{2}=\frac{192\times 4}{3}
Express 192\times \frac{4}{3} as a single fraction.
x^{2}=\frac{768}{3}
Multiply 192 and 4 to get 768.
x^{2}=256
Divide 768 by 3 to get 256.
x=16 x=-16
Take the square root of both sides of the equation.
\frac{3}{4}x^{2}=192
Multiply x and x to get x^{2}.
\frac{3}{4}x^{2}-192=0
Subtract 192 from both sides.
x=\frac{0±\sqrt{0^{2}-4\times \frac{3}{4}\left(-192\right)}}{2\times \frac{3}{4}}
This equation is in standard form: ax^{2}+bx+c=0. Substitute \frac{3}{4} for a, 0 for b, and -192 for c in the quadratic formula, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{0±\sqrt{-4\times \frac{3}{4}\left(-192\right)}}{2\times \frac{3}{4}}
Square 0.
x=\frac{0±\sqrt{-3\left(-192\right)}}{2\times \frac{3}{4}}
Multiply -4 times \frac{3}{4}.
x=\frac{0±\sqrt{576}}{2\times \frac{3}{4}}
Multiply -3 times -192.
x=\frac{0±24}{2\times \frac{3}{4}}
Take the square root of 576.
x=\frac{0±24}{\frac{3}{2}}
Multiply 2 times \frac{3}{4}.
x=16
Now solve the equation x=\frac{0±24}{\frac{3}{2}} when ± is plus. Divide 24 by \frac{3}{2} by multiplying 24 by the reciprocal of \frac{3}{2}.
x=-16
Now solve the equation x=\frac{0±24}{\frac{3}{2}} when ± is minus. Divide -24 by \frac{3}{2} by multiplying -24 by the reciprocal of \frac{3}{2}.
x=16 x=-16
The equation is now solved.