Evaluate
5x\left(3x-2\right)
Expand
15x^{2}-10x
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5x^{2}\times 5+\left(-2x-2\right)\times 5x
Multiply x and x to get x^{2}.
25x^{2}+\left(-2x-2\right)\times 5x
Multiply 5 and 5 to get 25.
25x^{2}+\left(-10x-10\right)x
Use the distributive property to multiply -2x-2 by 5.
25x^{2}-10x^{2}-10x
Use the distributive property to multiply -10x-10 by x.
15x^{2}-10x
Combine 25x^{2} and -10x^{2} to get 15x^{2}.
5x^{2}\times 5+\left(-2x-2\right)\times 5x
Multiply x and x to get x^{2}.
25x^{2}+\left(-2x-2\right)\times 5x
Multiply 5 and 5 to get 25.
25x^{2}+\left(-10x-10\right)x
Use the distributive property to multiply -2x-2 by 5.
25x^{2}-10x^{2}-10x
Use the distributive property to multiply -10x-10 by x.
15x^{2}-10x
Combine 25x^{2} and -10x^{2} to get 15x^{2}.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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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
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}