7x(2x-3)+4(x+3)+5x+2=14x^2-21x+4x+12+5x+2=14x^2-12x+14=14*(-3/4)^2-12*(-3/4)+14=7.875+9+14=16.875+14=30.875
7x(2x-3)+4(x+3)+5x+2=14x^2-21x+4x+12+5x+2=14x^2-12x+14=14*(-3/4)^2-12*(-3/4)+14=7.875+9+14=16.875+14=30.875