Question

(m3-3m2+m-1)-(2m3-m+3) =?

Answer 1

-m^3 - 3m^2 +2m -4

Explanation:

(m^3-3m^2+m-1)-(2m^3-m+3)

Distribute the minus sign

(m^3-3m^2+m-1)-2m^3+m-3

I like to line them up vertically

m^3-3m^2+m-1

-2m^3 +m-3

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-m^3 - 3m^2 +2m -4