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\frac{\left(6x+1\right)\left(-11x+8\right)}{-11x+8}+\frac{x^{2}+3}{-11x+8}
To add or subtract expressions, expand them to make their denominators the same. Multiply 6x+1 times \frac{-11x+8}{-11x+8}.
\frac{\left(6x+1\right)\left(-11x+8\right)+x^{2}+3}{-11x+8}
Since \frac{\left(6x+1\right)\left(-11x+8\right)}{-11x+8} and \frac{x^{2}+3}{-11x+8} have the same denominator, add them by adding their numerators.
\frac{-66x^{2}+48x-11x+8+x^{2}+3}{-11x+8}
Do the multiplications in \left(6x+1\right)\left(-11x+8\right)+x^{2}+3.
\frac{-65x^{2}+37x+11}{-11x+8}
Combine like terms in -66x^{2}+48x-11x+8+x^{2}+3.
\frac{\left(6x+1\right)\left(-11x+8\right)}{-11x+8}+\frac{x^{2}+3}{-11x+8}
To add or subtract expressions, expand them to make their denominators the same. Multiply 6x+1 times \frac{-11x+8}{-11x+8}.
\frac{\left(6x+1\right)\left(-11x+8\right)+x^{2}+3}{-11x+8}
Since \frac{\left(6x+1\right)\left(-11x+8\right)}{-11x+8} and \frac{x^{2}+3}{-11x+8} have the same denominator, add them by adding their numerators.
\frac{-66x^{2}+48x-11x+8+x^{2}+3}{-11x+8}
Do the multiplications in \left(6x+1\right)\left(-11x+8\right)+x^{2}+3.
\frac{-65x^{2}+37x+11}{-11x+8}
Combine like terms in -66x^{2}+48x-11x+8+x^{2}+3.