Subtract:
–m2 + 5mn from 4m2 – 3mn + 8

Subtract:
–m2 + 5mn from 4m2 – 3mn + 8

Dear Student

When term have the same algebraic factors, they are like terms.
Then, we have to subtract the like terms
= 4m^2–3mn + 8–(- m^2+ 5mn)
= 4m^2–3mn + 8 + m^2- 5mn
= 4m^2+ m^2–3mn - 5mn + 8
= 3m^2- 8mn + 8
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​Thanks