Evaluate
-\frac{23x^{2}}{5}+\frac{47x}{20}+19
Expand
-\frac{23x^{2}}{5}+\frac{47x}{20}+19
Graph
Quiz
Polynomial
5 problems similar to:
( 1.4 x ^ { 2 } - 0.77 x + 3.4 ) - 3 ( 2 x ^ { 2 } - 1.04 x - 5.2 )
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1.4x^{2}-0.77x+3.4-6x^{2}+3.12x+15.6
Use the distributive property to multiply -3 by 2x^{2}-1.04x-5.2.
-4.6x^{2}-0.77x+3.4+3.12x+15.6
Combine 1.4x^{2} and -6x^{2} to get -4.6x^{2}.
-4.6x^{2}+2.35x+3.4+15.6
Combine -0.77x and 3.12x to get 2.35x.
-4.6x^{2}+2.35x+19
Add 3.4 and 15.6 to get 19.
1.4x^{2}-0.77x+3.4-6x^{2}+3.12x+15.6
Use the distributive property to multiply -3 by 2x^{2}-1.04x-5.2.
-4.6x^{2}-0.77x+3.4+3.12x+15.6
Combine 1.4x^{2} and -6x^{2} to get -4.6x^{2}.
-4.6x^{2}+2.35x+3.4+15.6
Combine -0.77x and 3.12x to get 2.35x.
-4.6x^{2}+2.35x+19
Add 3.4 and 15.6 to get 19.
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}