Solve for x
x=-5
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2x\left(x+1\right)\times 2-\left(x+1\right)\times 5=2x\times 2x
Variable x cannot be equal to any of the values -1,0 since division by zero is not defined. Multiply both sides of the equation by 2x\left(x+1\right), the least common multiple of 2x,x+1.
2x\left(x+1\right)\times 2-\left(x+1\right)\times 5=\left(2x\right)^{2}
Multiply 2x and 2x to get \left(2x\right)^{2}.
\left(2x^{2}+2x\right)\times 2-\left(x+1\right)\times 5=\left(2x\right)^{2}
Use the distributive property to multiply 2x by x+1.
4x^{2}+4x-\left(x+1\right)\times 5=\left(2x\right)^{2}
Use the distributive property to multiply 2x^{2}+2x by 2.
4x^{2}+4x-\left(5x+5\right)=\left(2x\right)^{2}
Use the distributive property to multiply x+1 by 5.
4x^{2}+4x-5x-5=\left(2x\right)^{2}
To find the opposite of 5x+5, find the opposite of each term.
4x^{2}-x-5=\left(2x\right)^{2}
Combine 4x and -5x to get -x.
4x^{2}-x-5=2^{2}x^{2}
Expand \left(2x\right)^{2}.
4x^{2}-x-5=4x^{2}
Calculate 2 to the power of 2 and get 4.
4x^{2}-x-5-4x^{2}=0
Subtract 4x^{2} from both sides.
-x-5=0
Combine 4x^{2} and -4x^{2} to get 0.
-x=5
Add 5 to both sides. Anything plus zero gives itself.
x=-5
Multiply both sides by -1.
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}