Question

How do you evaluate `3m-n(m^2-4)` if `m=2` and `n=5`?

Answer 1

`3m-n(m^2-4)=6`
`m=2`
`n=5`

Explanation:

Put the given numbers in the expression:
`3*2-5*(2^2-4)=`
`=6-5*(4-4)=`
`=6-5*0=`6