Level 2 Solving Quadratics

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form
• Write down: a=1, b=6, c=-13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Solve.
x² + 18 = 11x

• {-1, 2}
• {2, 9}
• {-11, 9}
• {2, 13}

Solve
4m² - 100 = 0

• m=25, -25
• m=96
• m=5, -5
• m=-96

Tags

CCSS.8.EE.A.2

Solve
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

Solve: 3x² + 2 = -7x

• x = -3 , -1/2

• x = 1/3 , 2

• x = -1/3 , -2

• x = 3 , 1/2

Solve: x³ - 9x² + 18x = 0

• x = -3, 6

• x = 3, - 6

• x = 0, -3, -6

• x = 0, 3, 6