Evaluate
19+5y-13y^{2}
Expand
19+5y-13y^{2}
Graph
Share
Copied to clipboard
-7y^{2}-2y+7-8y^{2}+9y+7+2y^{2}-2y+5
To find the opposite of 8y^{2}-9y-7, find the opposite of each term.
-15y^{2}-2y+7+9y+7+2y^{2}-2y+5
Combine -7y^{2} and -8y^{2} to get -15y^{2}.
-15y^{2}+7y+7+7+2y^{2}-2y+5
Combine -2y and 9y to get 7y.
-15y^{2}+7y+14+2y^{2}-2y+5
Add 7 and 7 to get 14.
-13y^{2}+7y+14-2y+5
Combine -15y^{2} and 2y^{2} to get -13y^{2}.
-13y^{2}+5y+14+5
Combine 7y and -2y to get 5y.
-13y^{2}+5y+19
Add 14 and 5 to get 19.
-7y^{2}-2y+7-8y^{2}+9y+7+2y^{2}-2y+5
To find the opposite of 8y^{2}-9y-7, find the opposite of each term.
-15y^{2}-2y+7+9y+7+2y^{2}-2y+5
Combine -7y^{2} and -8y^{2} to get -15y^{2}.
-15y^{2}+7y+7+7+2y^{2}-2y+5
Combine -2y and 9y to get 7y.
-15y^{2}+7y+14+2y^{2}-2y+5
Add 7 and 7 to get 14.
-13y^{2}+7y+14-2y+5
Combine -15y^{2} and 2y^{2} to get -13y^{2}.
-13y^{2}+5y+14+5
Combine 7y and -2y to get 5y.
-13y^{2}+5y+19
Add 14 and 5 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}