Solving Quadratics with a Greater Than One

What is the first step to solving THIS equation by completing the square? x² + 10x + 21 = 0

• Set the equation equal to zero

• Divide 10 by 2 and add the result to both sides

• Add x² and 10x together

• Subtract the 21

Tags

CCSS.HSA-REI.B.4B

Solve
 3x² + 5x - 12 = 0

• x = -4/3, x = 3

• x = 4/3, x = -3

• x = -1, x = 4

• x = 1, x = -4

Tags

CCSS.HSA-REI.B.4B

Factor:

2x² + 3x - 9

• 2(x + 3)(x - 3)

• (2x - 3)²

• (x + 3)(2x - 3)

• (2x + 3)(x - 3)

2x² + 17x + 21 = 0

• x = ^-21/₂, -17

• x = ²/₃, 16

• x = -7, ^-3/₂

• x = 15, -³/₇

Tags

CCSS.HSA-REI.B.4B

What is the fully factored form of 2x² + 18x + 40?

• (x + 5)(x + 8)

• (x + 5)(x + 4)

• 2(x + 5)(x + 4)

• 2(x + 10)(x + 2)

What is the fully factored form of 5x² + 5x - 60?

• 5(x - 3)(x + 4)

• (x - 3)(x + 4)

• (x + 5)(x - 12)

• 5(x - 4)(x + 3)

What is the fully factored form of 2x² + 9x - 5?

• (2x + 1)(x - 5)

• (2x - 1)(x + 10)

• (2x - 1)(x + 5)

• (x - 1)(2x + 10)

Solve by factoring:  2x²+ 7x + 6 = 0

• x= 3/2 and x = 2

• x = -3/2 and x = -2

• x = 6 and x = 7

• x = -6 and x = -7

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:3x² + 5x + 2 = 0  

• x = -2/3 and x = -1

• x = -3/2 and x = -1

• x = 2/3 and x = 1

• x = 2/3 and x = -1

Tags

CCSS.HSA-REI.B.4B

Factor:

3x² - 7x + 2

• (x - 1) (3x + 2)

• (x - 2) (3x -1)

• (x - 1) (3x - 2)

• (x + 2) (3x + 1)