Hello, Twinkie!

I cannot figure out how to do this question.

Do I seperate it into its sides first or something? . What does that mean?

Do I treat the number in front with the x as a constant? . Of course!

I'm confused. . So am I.

Please show me what to do.

We have two integrals: .

Substitute: .

. . . . . . . .

Back-substitute: .

Substitute: .

. . . . . . . .

Back-substitute: .

Answer: .