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\left(2x\right)^{2}-1=4x^{2}-3x
Consider \left(2x-1\right)\left(2x+1\right). Multiplication can be transformed into difference of squares using the rule: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}. Square 1.
2^{2}x^{2}-1=4x^{2}-3x
Expand \left(2x\right)^{2}.
4x^{2}-1=4x^{2}-3x
Calculate 2 to the power of 2 and get 4.
4x^{2}-1-4x^{2}=-3x
Subtract 4x^{2} from both sides.
-1=-3x
Combine 4x^{2} and -4x^{2} to get 0.
-3x=-1
Swap sides so that all variable terms are on the left hand side.
x=\frac{-1}{-3}
Divide both sides by -3.
x=\frac{1}{3}
Fraction \frac{-1}{-3} can be simplified to \frac{1}{3} by removing the negative sign from both the numerator and the denominator.