Question

Add or subtract.

(m? - m - 3) + (m-4)

A. m^2 +m-1
B. m^2+ 2m - 7
C. m^2-7
D. m^2 -1​

Answer 1

C.

Explanation:

(m^2-m-3) + (m-4)

there is no like terms for m^2 so it stays the stay.

next you add -m to m because the first m is negative they cancel out leaving nothing. lastly we add -4+-3 these added together give you -7.

so you are left with m^2 +0 -7

which simplifies to m^2 - 7