Solving Quadratics

Use the quadratic formula to solve 2x² + 2x - 12?

• -2, 3

• 2, 3

• 2, -3

• -2, -3

Tags

CCSS.HSA-REI.B.4B

-5x² = -50

• ± 5

• ± 10

• ± √10

• -10

Tags

CCSS.8.EE.A.2

What do you do to the b value to correctly complete the square?

• square it
• divide it by 2 and square the result
• divide it by 2 and take the square root of the result
• divide it by 2 only

Tags

CCSS.HSA-REI.B.4B

Solve by completing the square:
k² − 12k + 23 = 0

• {6 + √13, 6 - √13}
• {-6 + √13, -6 - √13}
• {6 + √59, 6 - √59}
• {-6 + √59, -6 - √59}

Tags

CCSS.HSA-REI.B.4B

Complete the square for: x² - 4x - 77 = 0

• (x - 2)² + 73
• (x + 2)² + 73
• (x - 2)² - 81
• (x + 2)² - 81

Tags

CCSS.HSA-REI.B.4B

Transfer to Vertex Form by Complete the square for: n² - 18n - 59 = 4

• (n + 9)² - 144
• (n - 9)² - 144
• (n - 9)² - 18
• (n + 9)² - 18

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

• A
• B
• C
• D

Tags

CCSS.HSA-REI.B.4B

How many roots will the equation: -4x²  - 12x + 4= 1 have?

• 1
• 2
• 3
• none

Determine the value of the discriminant and name the nature of the solution for the following:
x² + 2x - 63
Remember:  b² - 4ac

• 256 - 2 reals - Rational
• √(-256 - 2 imaginary solutions
• √(137) - 2 reals - Irrational
• 123 - 2 reals - Rational