## Introductory Algebra for College Students (7th Edition)

-5x$^2$-9x-12
Distribute the negative sign to the parentheses and then combine like terms. (x$^2$-5x-3)-(6x$^2$+4x+9) x$^2$-5x-3-6x$^2$-4x-9 (x$^2$-6x$^2$)+(-5x-4x)+(-3-9) (-5x$^2$)+(-9x)+(-12) -5x$^2$-9x-12