## Algebra 1

(7x+2)(x-p) p= $\frac{18}{2}$ p= 9 We check we simplifying the polynomial. (7x+2)(x-9) Use FOIL to simplify. FOIL: First (Multiply the first variables in the brackets), outside (Multiply the outer variables), Inside (Multiply the inside variables), Last (Multiply the last variables in the brackets). 7x^{2} + 2x - 63x -18 7x^{2} - 61x -18 Thus the correct answer is 9 because we get the final term to be -18 as seen in the polynomial above.