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4\left(-5x+8\right)^{2}-49+49=-24+49
Add 49 to both sides of the equation.
4\left(-5x+8\right)^{2}=-24+49
Subtracting 49 from itself leaves 0.
4\left(-5x+8\right)^{2}=25
Add -24 to 49.
\frac{4\left(-5x+8\right)^{2}}{4}=\frac{25}{4}
Divide both sides by 4.
\left(-5x+8\right)^{2}=\frac{25}{4}
Dividing by 4 undoes the multiplication by 4.
-5x+8=\frac{5}{2} -5x+8=-\frac{5}{2}
Take the square root of both sides of the equation.
-5x+8-8=\frac{5}{2}-8 -5x+8-8=-\frac{5}{2}-8
Subtract 8 from both sides of the equation.
-5x=\frac{5}{2}-8 -5x=-\frac{5}{2}-8
Subtracting 8 from itself leaves 0.
-5x=-\frac{11}{2}
Subtract 8 from \frac{5}{2}.
-5x=-\frac{21}{2}
Subtract 8 from -\frac{5}{2}.
\frac{-5x}{-5}=-\frac{\frac{11}{2}}{-5} \frac{-5x}{-5}=-\frac{\frac{21}{2}}{-5}
Divide both sides by -5.
x=-\frac{\frac{11}{2}}{-5} x=-\frac{\frac{21}{2}}{-5}
Dividing by -5 undoes the multiplication by -5.
x=\frac{11}{10}
Divide -\frac{11}{2} by -5.
x=\frac{21}{10}
Divide -\frac{21}{2} by -5.
x=\frac{11}{10} x=\frac{21}{10}
The equation is now solved.