Evaluate
17x^{2}-12x-4
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17x^{2}-12x-4
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9x^{2}+6x+1+\left(4x+1\right)\left(2x-5\right)
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(3x+1\right)^{2}.
9x^{2}+6x+1+8x^{2}-18x-5
Use the distributive property to multiply 4x+1 by 2x-5 and combine like terms.
17x^{2}+6x+1-18x-5
Combine 9x^{2} and 8x^{2} to get 17x^{2}.
17x^{2}-12x+1-5
Combine 6x and -18x to get -12x.
17x^{2}-12x-4
Subtract 5 from 1 to get -4.
9x^{2}+6x+1+\left(4x+1\right)\left(2x-5\right)
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(3x+1\right)^{2}.
9x^{2}+6x+1+8x^{2}-18x-5
Use the distributive property to multiply 4x+1 by 2x-5 and combine like terms.
17x^{2}+6x+1-18x-5
Combine 9x^{2} and 8x^{2} to get 17x^{2}.
17x^{2}-12x+1-5
Combine 6x and -18x to get -12x.
17x^{2}-12x-4
Subtract 5 from 1 to get -4.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
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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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}