Evaluate
8x^{2}-4x-1
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8x^{2}-4x-1
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8x^{2}-12x+2x-3+6x+2
Apply the distributive property by multiplying each term of 4x+1 by each term of 2x-3.
8x^{2}-10x-3+6x+2
Combine -12x and 2x to get -10x.
8x^{2}-4x-3+2
Combine -10x and 6x to get -4x.
8x^{2}-4x-1
Add -3 and 2 to get -1.
8x^{2}-12x+2x-3+6x+2
Apply the distributive property by multiplying each term of 4x+1 by each term of 2x-3.
8x^{2}-10x-3+6x+2
Combine -12x and 2x to get -10x.
8x^{2}-4x-3+2
Combine -10x and 6x to get -4x.
8x^{2}-4x-1
Add -3 and 2 to get -1.
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{ x } ^ { 2 } - 4 x - 5 = 0
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y = 3x + 4
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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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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