... both sides by a < /b> – < /b> b to isolate x:< /b> ᎏ x(< /b> a< /b> a – < /b> – b b)ᎏ = < /b> ᎏc a< /b> + b dᎏ■ The < /b> a < /b> – < /b> b binomial cancels out on the < /b> left, resulting in < /b> the < /b> answer: x < /b> = < /b> ᎏc a< /b> + b dᎏQuadratic Trinomials A < /b> quadratic ... results in < /b> 7x(< /b> 7x< /b> 2+ 3).Isolating Variables Using FractionsIt may be necessary to use factoring to isolate a < /b> variable in < /b> an equation.Example:If ax – < /b> c = < /b> bx + d, what is x < /b> in < /b> terms of a,< /b> b, c, and < /b> ... and < /b> iden-tify a,< /b> b, and < /b> c. Then substitute those values into the < /b> formula: x < /b> = < /b> For example, in < /b> the < /b> quadratic equation 2x< /b> 2 – < /b> x < /b> – < /b> 6 = < /b> 0, a < /b> = < /b> 2, b = < /b> –1 < /b> , and < /b> c = < /b> –6 < /b> . When these values aresubstituted...