READ THE NOTE ! PSLSNMSDB I BEGG U

In the polynomial below, what number should replace the question mark to produce a difference of squares? x2 + ? x - 36

P= price tax is 4% added to the price. which expression shows the total price including tax?

Abox of chocolates cost $7 which equation relates the number of boxes sold parentheses x parentheses and total cost of the boxes sold parentheses y parentheses