## Precalculus (6th Edition) Blitzer

$-9x^2+3x+9$
Use the FOIL method and combine the like terms to evaluate the expression as $(5x-7)(3x-2)-(4x-5)(6x-1)=15x^2-10x-21x+14-(24x^2-4x-30x+5)=-9x^2-31x+34x+14-5=-9x^2+3x+9$