Question

Combine Like Terms. (-3y^2-7y-9)-(4y^2+6y+9)

Answer 1

you mean this? O.o
\[
(-3y^2 -7y -9) - (4y^2 + 6y + 9) = \\
= (-3y^2 -7y -9) -4y^2 -6y -9 = \\
=-7y^2 - 13y -18
\]

Answer 2

i think so

Answer 3

yea