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\left(x+2\right)\left(x-5\right)-\left(x-2\right)\times 5=\left(x-2\right)^{2}
Variable x cannot be equal to any of the values -2,2 since division by zero is not defined. Multiply both sides of the equation by \left(x+2\right)\left(x-2\right)^{2}, the least common multiple of x^{2}-4x+4,x^{2}-4,x+2.
x^{2}-3x-10-\left(x-2\right)\times 5=\left(x-2\right)^{2}
Use the distributive property to multiply x+2 by x-5 and combine like terms.
x^{2}-3x-10-\left(5x-10\right)=\left(x-2\right)^{2}
Use the distributive property to multiply x-2 by 5.
x^{2}-3x-10-5x+10=\left(x-2\right)^{2}
To find the opposite of 5x-10, find the opposite of each term.
x^{2}-8x-10+10=\left(x-2\right)^{2}
Combine -3x and -5x to get -8x.
x^{2}-8x=\left(x-2\right)^{2}
Add -10 and 10 to get 0.
x^{2}-8x=x^{2}-4x+4
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(x-2\right)^{2}.
x^{2}-8x-x^{2}=-4x+4
Subtract x^{2} from both sides.
-8x=-4x+4
Combine x^{2} and -x^{2} to get 0.
-8x+4x=4
Add 4x to both sides.
-4x=4
Combine -8x and 4x to get -4x.
x=\frac{4}{-4}
Divide both sides by -4.
x=-1
Divide 4 by -4 to get -1.