Factor
6x\left(2-x\right)
Evaluate
6x\left(2-x\right)
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6\left(2x-x^{2}\right)
Factor out 6.
x\left(2-x\right)
Consider 2x-x^{2}. Factor out x.
6x\left(-x+2\right)
Rewrite the complete factored expression.
-6x^{2}+12x=0
Quadratic polynomial can be factored using the transformation ax^{2}+bx+c=a\left(x-x_{1}\right)\left(x-x_{2}\right), where x_{1} and x_{2} are the solutions of the quadratic equation ax^{2}+bx+c=0.
x=\frac{-12±\sqrt{12^{2}}}{2\left(-6\right)}
All equations of the form ax^{2}+bx+c=0 can be solved using the quadratic formula: \frac{-b±\sqrt{b^{2}-4ac}}{2a}. The quadratic formula gives two solutions, one when ± is addition and one when it is subtraction.
x=\frac{-12±12}{2\left(-6\right)}
Take the square root of 12^{2}.
x=\frac{-12±12}{-12}
Multiply 2 times -6.
x=\frac{0}{-12}
Now solve the equation x=\frac{-12±12}{-12} when ± is plus. Add -12 to 12.
x=0
Divide 0 by -12.
x=-\frac{24}{-12}
Now solve the equation x=\frac{-12±12}{-12} when ± is minus. Subtract 12 from -12.
x=2
Divide -24 by -12.
-6x^{2}+12x=-6x\left(x-2\right)
Factor the original expression using ax^{2}+bx+c=a\left(x-x_{1}\right)\left(x-x_{2}\right). Substitute 0 for x_{1} and 2 for x_{2}.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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Matrix
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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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