9.9t2-4 = (3t-2) (3t+2)
checking: (3t-2) (3t+2) = 9+² +6t -6t-4 =9t²-4


10.2x²+3x-14=(2x+2)(x-2)
checking:(2x+2)(x-2)=2x²-4x+7x-14=2x²+3x-14
Questions:
a. How did you factor each polynomial?

b. what factoring techniques did you use to come up with the factors of each poly nomial?

c. How would you know if the factors you got are the correct ones?

d. Which of the polynomials did you find difficult to factor? Why ?​