find the mean value of the function y=x^2+x on interval [2,6]

[@The-great-teacher.]

Thanks for teaching us, 72+36 =108 not 90

[@sk.mdmathssolutions]

Thanks for pointing out the mistake
I forgot to divide the 36/2
See the steps
It becomes 18
Then 72+18=90
So correct it
Okay

[@gdio194]

72 + 36 19