Week 1 Day 4: Solving quadratic equations

Identify the solutions to 2x(x-4)(x+2)=0

• {2,3}

• {-2,1,3}

• {-2,0,4}

• {-2,4}

Find all the solutions for x when

x² + 9x - 36 = 0

• (x + 12)(x - 3)

• x = 12 and x = -3

• x = -12 and x = 3

• (x - 9)(x - 4)

Tags

CCSS.HSA-REI.B.4B

Solve the equation:

x²+4x-32=0

• x= -8, 4

• x= 8, -4

• x= -8, -4

• x= 8, 4

Solve the equation:

x²-14x-51=0

• x= 17, -3

• x= -17, 3

• x= -17, -3

• x= 17, 3

Solve by factoring: x² - 9x + 20 = 0

• x = -4 and x = -5
• x = 20 and x = -9
• x = 4 and x = 5
• x = -4 and x = 5

Tags

CCSS.HSA-REI.B.4B

Solve the equation:

x²-7x=0

• x= 0, -7

• x= 0, 7

Solve the equation:

x²=18x-81

• x= -9

• x= 9

• x= -9, 9

• Cannot be determined

Solve the equation:

4x²+7x-17=3x²+12x-3

• x= -7, -2

• x= 7, -2

• x= -7, 2

• x= 7, 2

Solve the equation:

3x²+9x-30=0

• x= 2, -5

• x= 5, -2

• x= -5, -2

• x= 5, 2

Solve the equation:

5x²-25x=5x-40

• x= -4, -2

• x= -4, 2

• x= 4, 2

• x= 4, -2