Solve for x
x = \frac{7}{5} = 1\frac{2}{5} = 1.4
x = -\frac{7}{5} = -1\frac{2}{5} = -1.4
Graph
Share
Copied to clipboard
24x^{2}+49\left(25-x^{2}\right)=1176
Multiply both sides of the equation by 1176, the least common multiple of 49,24.
24x^{2}+1225-49x^{2}=1176
Use the distributive property to multiply 49 by 25-x^{2}.
-25x^{2}+1225=1176
Combine 24x^{2} and -49x^{2} to get -25x^{2}.
-25x^{2}=1176-1225
Subtract 1225 from both sides.
-25x^{2}=-49
Subtract 1225 from 1176 to get -49.
x^{2}=\frac{-49}{-25}
Divide both sides by -25.
x^{2}=\frac{49}{25}
Fraction \frac{-49}{-25} can be simplified to \frac{49}{25} by removing the negative sign from both the numerator and the denominator.
x=\frac{7}{5} x=-\frac{7}{5}
Take the square root of both sides of the equation.
24x^{2}+49\left(25-x^{2}\right)=1176
Multiply both sides of the equation by 1176, the least common multiple of 49,24.
24x^{2}+1225-49x^{2}=1176
Use the distributive property to multiply 49 by 25-x^{2}.
-25x^{2}+1225=1176
Combine 24x^{2} and -49x^{2} to get -25x^{2}.
-25x^{2}+1225-1176=0
Subtract 1176 from both sides.
-25x^{2}+49=0
Subtract 1176 from 1225 to get 49.
x=\frac{0±\sqrt{0^{2}-4\left(-25\right)\times 49}}{2\left(-25\right)}
This equation is in standard form: ax^{2}+bx+c=0. Substitute -25 for a, 0 for b, and 49 for c in the quadratic formula, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
x=\frac{0±\sqrt{-4\left(-25\right)\times 49}}{2\left(-25\right)}
Square 0.
x=\frac{0±\sqrt{100\times 49}}{2\left(-25\right)}
Multiply -4 times -25.
x=\frac{0±\sqrt{4900}}{2\left(-25\right)}
Multiply 100 times 49.
x=\frac{0±70}{2\left(-25\right)}
Take the square root of 4900.
x=\frac{0±70}{-50}
Multiply 2 times -25.
x=-\frac{7}{5}
Now solve the equation x=\frac{0±70}{-50} when ± is plus. Reduce the fraction \frac{70}{-50} to lowest terms by extracting and canceling out 10.
x=\frac{7}{5}
Now solve the equation x=\frac{0±70}{-50} when ± is minus. Reduce the fraction \frac{-70}{-50} to lowest terms by extracting and canceling out 10.
x=-\frac{7}{5} x=\frac{7}{5}
The equation is now solved.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}