Factoring Ax^2 + Bx + C AC Method

Factor:

2x² -x - 6

• (x - 3)(2x + 2)

• (2x + 3)(x - 2)

• (2x - 3)(2x + 2)

• (x - 1)(2x + 6)

Factor

5a² + 21a + 4

• (5a + 1)(a + 4)

• (5a + 1)(a - 4)

• (5a + 2)(a + 2)

• (5a + 4)(5a + 1)

What is a method of checking your work when factoring?

• Multiply the factors
• asking the teacher every time
• assume you're correct
• division

The area of a rectangle is (6x² - 35x + 50) ft². If the width is (2x - 5) ft. What is the length?

• (3x + 10) ft

• (3x - 10) ft

• (6x - 50) ft

• (6x - 10) ft

If a trinomial, ax² +or- bx + c, has a positive "c" value, what do you know about the signs in its binomial factors?

• Both signs are positive.
• Both signs are negative. 
• One sign is positive and one is negative.
• The signs are the same, both + or both -

Factor

4n² - n - 3

• (2n - 1)(2n - 3)

• (4n - 1)(n + 3)

• (4n + 3)(n - 1)

• (2n + 1)(2n - 3)