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\left(x^{2}-9\right)\times 4-\left(x-1\right)\left(x+3\right)\times 2=\left(x-3\right)\left(x-1\right)\times 2
Variable x cannot be equal to any of the values -3,1,3 since division by zero is not defined. Multiply both sides of the equation by \left(x-3\right)\left(x-1\right)\left(x+3\right), the least common multiple of x-1,x-3,x+3.
4x^{2}-36-\left(x-1\right)\left(x+3\right)\times 2=\left(x-3\right)\left(x-1\right)\times 2
Use the distributive property to multiply x^{2}-9 by 4.
4x^{2}-36-\left(x^{2}+2x-3\right)\times 2=\left(x-3\right)\left(x-1\right)\times 2
Use the distributive property to multiply x-1 by x+3 and combine like terms.
4x^{2}-36-\left(2x^{2}+4x-6\right)=\left(x-3\right)\left(x-1\right)\times 2
Use the distributive property to multiply x^{2}+2x-3 by 2.
4x^{2}-36-2x^{2}-4x+6=\left(x-3\right)\left(x-1\right)\times 2
To find the opposite of 2x^{2}+4x-6, find the opposite of each term.
2x^{2}-36-4x+6=\left(x-3\right)\left(x-1\right)\times 2
Combine 4x^{2} and -2x^{2} to get 2x^{2}.
2x^{2}-30-4x=\left(x-3\right)\left(x-1\right)\times 2
Add -36 and 6 to get -30.
2x^{2}-30-4x=\left(x^{2}-4x+3\right)\times 2
Use the distributive property to multiply x-3 by x-1 and combine like terms.
2x^{2}-30-4x=2x^{2}-8x+6
Use the distributive property to multiply x^{2}-4x+3 by 2.
2x^{2}-30-4x-2x^{2}=-8x+6
Subtract 2x^{2} from both sides.
-30-4x=-8x+6
Combine 2x^{2} and -2x^{2} to get 0.
-30-4x+8x=6
Add 8x to both sides.
-30+4x=6
Combine -4x and 8x to get 4x.
4x=6+30
Add 30 to both sides.
4x=36
Add 6 and 30 to get 36.
x=\frac{36}{4}
Divide both sides by 4.
x=9
Divide 36 by 4 to get 9.