How do you factor the trinomial #3x^2 - 8x +5 #?
1 Answer
Jan 29, 2016
(x - 1)(3x - 5)
Explanation:
Since a + b + c = 0, use shortcut. One factor is (x - 1) and the other is (ax - c) = (3x - 5)
Factored form:
y = (x - 1)(3x - 5)
Reminder about shortcut
When a + b + c = 0,
- One real root is x = 1 and the other is ax = c
- One factor is (x - 1) and the other is (ax - c)
