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8x^{2}+6x-9-17=2x\left(4x+1\right)
Use the distributive property to multiply 2x+3 by 4x-3 and combine like terms.
8x^{2}+6x-26=2x\left(4x+1\right)
Subtract 17 from -9 to get -26.
8x^{2}+6x-26=8x^{2}+2x
Use the distributive property to multiply 2x by 4x+1.
8x^{2}+6x-26-8x^{2}=2x
Subtract 8x^{2} from both sides.
6x-26=2x
Combine 8x^{2} and -8x^{2} to get 0.
6x-26-2x=0
Subtract 2x from both sides.
4x-26=0
Combine 6x and -2x to get 4x.
4x=26
Add 26 to both sides. Anything plus zero gives itself.
x=\frac{26}{4}
Divide both sides by 4.
x=\frac{13}{2}
Reduce the fraction \frac{26}{4} to lowest terms by extracting and canceling out 2.