Question

Half the sum of 12 and x2 decreased by one-third x

Answer 1

The sum of 12 and x squared is

`12+x^2`

Half that sum is

`(1)/(2)(12+x^2)`

If we decrease this quantity by 1/3 x we have

`(1)/(2)(12+x^2) - (1)/(3)x`