Solve for x
x = -\frac{4}{3} = -1\frac{1}{3} \approx -1.333333333
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x^{2}+3x+4-x^{2}=0
Subtract x^{2} from both sides.
3x+4=0
Combine x^{2} and -x^{2} to get 0.
3x=-4
Subtract 4 from both sides. Anything subtracted from zero gives its negation.
x=\frac{-4}{3}
Divide both sides by 3.
x=-\frac{4}{3}
Fraction \frac{-4}{3} can be rewritten as -\frac{4}{3} by extracting the negative sign.
Examples
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
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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
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Limits
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