Solving Quadratics: Irrational & Rational

The first step in solving the equation x² + 6x - 13 = 3 is to​ (a)   ​ (b)   ​ (c)   from sides.

• Factor
• Write down: a = 1, b = 6, c = -13
• subtract
• Add
• 3
• both
• 13
• one

Match the following quadratic equations with their solutions.

Tags

CCSS.HSA-REI.B.4B

The solution to the equation 9x² = 4 + 7x using the quadratic formula is x = (a)   and x = ​ (b)  

• x = 2 and x = 3
• x = -1 and x = .25
• x = 1 and x = -.45
• 1.16
• -0.38

What is this formula?

• This is the speed of light formula.
• This is the quadratic formula.
• This is the zero product property.
• This is scary.

Tags

CCSS.HSA-REI.B.4B

Solve Using the Quadratic Formula 
2x² + 7x - 15 = 0

• -1.5 or 5
• No Solution
• -5 or 1.5
• 0.7 or 5

Tags

CCSS.HSA-REI.B.4B

Solve

x² - 9x + 20 = 0

x=​ ​ ​ (a)   ,​ ​ (b)  

• -5
• -4
• 4
• 5

Determine the solution of x² + 9x - 22 = 0

Positive Solution: ​ (a)   Negative Solution: ​ (b)  

• 2
• -11
• 3
• -5
• 1
• -9
• 22
• -2
• -3
• 11

Tags

CCSS.HSA-REI.B.4B