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xx=\left(x-5\right)\left(x+1\right)
Variable x cannot be equal to any of the values 0,5 since division by zero is not defined. Multiply both sides of the equation by x\left(x-5\right), the least common multiple of x-5,x.
x^{2}=\left(x-5\right)\left(x+1\right)
Multiply x and x to get x^{2}.
x^{2}=x^{2}-4x-5
Use the distributive property to multiply x-5 by x+1 and combine like terms.
x^{2}-x^{2}=-4x-5
Subtract x^{2} from both sides.
0=-4x-5
Combine x^{2} and -x^{2} to get 0.
-4x-5=0
Swap sides so that all variable terms are on the left hand side.
-4x=5
Add 5 to both sides. Anything plus zero gives itself.
x=\frac{5}{-4}
Divide both sides by -4.
x=-\frac{5}{4}
Fraction \frac{5}{-4} can be rewritten as -\frac{5}{4} by extracting the negative sign.