How can I get a variable to print out the value in the same line I am declaring the value.
Simply put parenthesis around the entire variable declaration and it should print out. For example: $$ (x=7) $$ prints out 7.
How do I create a header for my word document that also includes a page number?
I would go up to the task bar and click on page number. Select the type of page number you would like and add it to the document. Then within the document double-click directly to the left of the page number and your header/footer should open up. Now you can type in whatever you would like to include in the header/footer.
How would you solve $$x^2-x-12=0$$ ?
I would start out by picturing the answer. Most quadratics (equations with $$x^2$$ in them) have a solution in the format $$(x-?)(x-?)$$ where the question marks represent the roots of the quadratic. Start by asking what adds to get to -1 but multiplies to get to -12. The answer would be -4 and 3. So the solutions of this are x=4 or x=-3.