Combine like terms to simplify the expression.

Start by changing the -2x to plus a negative 2x.

So we have 6x² + 3y² + 4y² - 2x.

Note that 3y² and 4y² are like terms because

they are exactly alike except for their coefficients.

So 3y² + 4y² simplifies to 7y².

Although 6x² and -2x look similar, they are not like terms.

So our final answer is 6x² + 7y² + -2x.

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb