Help me pl show your working plzz
Section 1—Multiplying
Polynomials Using the FOIL Process
16) (x + 3)(x – 12)
17) (x - 1)(x – 10)
18) (x + 4)(x + 11)
19) (x + 3)(x – 4)
20) (x – 10)(x - 10)
21) (r – 11 )(r + 11)
22) (m + 12)(m – 12)

Type the correct answer in the box. consider the system of linear equations below. rewrite one of the two equations above in the form ax + by = c, where a, b, and c are constants, so that the sum of the new equation and the unchanged equation from the original system results in an equation in one variable.