Solving Quadratic Equations Using the Box Method

What formula do you use to solve for the zeros of x² + 6x - 7?

• Quadratic Function

• Quadratic Formula

• x = -b/2a

• Box Method

Factor

3a² + 4a + 1

(Hint: X-Box Method)

• (7a-10)(a-8)

• Not factorable

• (3a+1)(a+1)

• (3a-1)(a-1)

Factor: 5n² - 6n - 27

(Hint: X-Box Method)

• (5n + 3)(n-9)

• (5n - 3)(n + 9)

• (5n + 9)(n - 3)

• (5n - 9)(n + 3)

Factor:

4x²-16x-9

(Hint: X-Box Method)

• (2x-9)(2x+1)

• (2x+9)(2x-1)

• (4x-1)(x+9)

• (x+1)(4x-9)

To finish factoring a quadratic, Jose began to take the GCF of every row and column. Identify what term would fill each space. Space A: ​ (a)   ​ Space B:​ (b)   ​ Space C: ​ ​ (c)   ​ Space D:​ (d)   ​

To finish factoring a quadratic, Jose began to take the GCF of every row and column. Identify what term would fill each space. Space A: ​ (a)   ​ Space B:​ (b)   ​

Space C: ​ ​ (c)   ​ Space D:​ (d)   ​