Question

(x+1)^2+(x+2)^2 ?

Answer 1

Answer: `2x^2+6x+5`

Explanation:

Expand `(x+1)^2+(x+2)^2`

Note that `(a+b)^2=a^2+2ab+b^2`

Applying this general formula:
`(x+1)^2+(x+2)^2`
`=(x^2+2x+1)+(x^2+4x+4)`

Combining like-terms:
`=2x^2+6x+5`