Question

A rectangle with a perimeter of 19m^2+2m-10 and a width of m^2 write an expression for the lenght

Answer 1

`8.5m^(2)+ m -5`

Explanation:

Since perimeter,
`P=19m^(2)+ 2m -10` and we know that P=2(l+w) then
`P=2(l+m^(2))=2l+2m^(2)`

The length will be
`2l=19m^(2)+ 2m -10-2m^(2)=17m^(2)+ 2m -10`

Now
`l=8.5m^(2)+ m -5`