5.3 solving quadratic equations by factoring

Find the zeros.

• 0 and 4
• 0 and -4
• 0
• -4

Tags

CCSS.HSF-IF.C.7A

Convert x² - 9x + 20 to factored form and solve.

• (x-10)(x+2); x = -2, 10
• (x+4)(x+5); x = -5, -4
• (x-4)(x-5); x = 4, 5
• Not factorable

Tags

CCSS.HSA-REI.B.4B

Factor 6x²-27x

• (6x+1)(x+3)
• 3x(2x-9)
• 6x(x-9)
• (3x-9)(2x+3)

Tags

CCSS.HSA.APR.A.1

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

 $x^2\ +\ 3\ =\ 4x$  

• 3, 1

• 1, 3

• 0,2

 $2x^2\ +\ x\ =\ 6$  

• 2,  $\frac{3}{2}$  

• -2,  $\frac{3}{2}$  

•  $\frac{3}{2},\ -2$  

 $x^2\ -\ x\ =\ 0$  

• 1, 0

• 0, 1

 $6x^2\ =\ 1\ -\ x$  

• -1/2, 1/3

• 1/2. 1/3

 $x^2\ -\ 25\ =\ 0$  

• 5, 5

• -5, - 5

• -5, 5

 $6\ -\ 7x\ =\ 3x^2$  

• -3, 2/3

• 3, 2/3

 $2x^2\ -\ 20x\ +\ 42\ =\ 0$  

• 3, 7

• 7, 3