I see it as
Can you solve?
To learn how the previous poster did the translation, try the following:
Translating Word Problems
"Number" Word Problems
To learn how to multiply out the parenthetical, try here.
To learn how to factor the resulting quadratic (x^2 - x - 42), try here.
To learn how to solve quadratics in general (including factored ones), try here.
That should cover any difficulties you're having. If not, please reply with a clear listing of your steps and reasoning so far. Thank you!