Evaluate
12+7x-12x^{2}
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12+7x-12x^{2}
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4x^{2}+7x+3-16x^{2}+9
Use the distributive property to multiply x+1 by 4x+3 and combine like terms.
-12x^{2}+7x+3+9
Combine 4x^{2} and -16x^{2} to get -12x^{2}.
-12x^{2}+7x+12
Add 3 and 9 to get 12.
4x^{2}+7x+3-16x^{2}+9
Use the distributive property to multiply x+1 by 4x+3 and combine like terms.
-12x^{2}+7x+3+9
Combine 4x^{2} and -16x^{2} to get -12x^{2}.
-12x^{2}+7x+12
Add 3 and 9 to get 12.
Examples
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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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