12. Find the area of the square whose side measures (x-7) cm.
A. (x2 + 14x + 49) cm?
C. (x2 – 14x - 49) cm2
B. (x2 – 14x + 49) cm2
D. (x2 + 14x - 49) cm2
13. How much will Maria pay if she buys (2x + 3) pencils which cost (4x - 3) pesos
each?
A. (8x2 - 6x -9) pesos
C. (8x2 + 6x -9) pesos
B. (8x2 + 6x + 9) pesos
D. (8x2 - 6x +9) pesos
4. Pedro spent (x3 - 6x -9) pesos for books. Each book costs (x - 3) pesos, how
many books did he buy?
A. x2 + 3x + 3 B.x2 + 3x - 3
C.3x2 – 3x - 3 D. x2-3​