Algebra Problems - Factors?
17. Identify a, b, and c for the trinomial.
x^2 - 7 +5x
Answers:
~ a = 1; b = 5; c = -7
~ a = 0; b = -7 c = 5
~ a = 1; b = -7 c = 5
~ None of these.
18. Use the ac test to determine if the polynomial can be factored.
3x^2 + 7x - 6
Answers:
~ 3x^2 + 7x - 6 is factorable.
~ 3x^2 + 7x - 6 is not factorable.
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17. 1st choice: a is in front of x^2 (1), b is in front of x (5) , c is the constant (-7)
18. ac = -18
Does -18 have a pair of factors that also add to 7? Yes it does: 9 & -2. So it is factorable.