Evaluate
\left(7-x\right)\left(x-1\right)\left(2x+1\right)
Expand
-2x^{3}+15x^{2}-6x-7
Graph
Share
Copied to clipboard
\left(2x^{2}-2x+x-1\right)\left(7-x\right)
Apply the distributive property by multiplying each term of 2x+1 by each term of x-1.
\left(2x^{2}-x-1\right)\left(7-x\right)
Combine -2x and x to get -x.
14x^{2}-2x^{3}-7x+x^{2}-7+x
Apply the distributive property by multiplying each term of 2x^{2}-x-1 by each term of 7-x.
15x^{2}-2x^{3}-7x-7+x
Combine 14x^{2} and x^{2} to get 15x^{2}.
15x^{2}-2x^{3}-6x-7
Combine -7x and x to get -6x.
\left(2x^{2}-2x+x-1\right)\left(7-x\right)
Apply the distributive property by multiplying each term of 2x+1 by each term of x-1.
\left(2x^{2}-x-1\right)\left(7-x\right)
Combine -2x and x to get -x.
14x^{2}-2x^{3}-7x+x^{2}-7+x
Apply the distributive property by multiplying each term of 2x^{2}-x-1 by each term of 7-x.
15x^{2}-2x^{3}-7x-7+x
Combine 14x^{2} and x^{2} to get 15x^{2}.
15x^{2}-2x^{3}-6x-7
Combine -7x and x to get -6x.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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}