Solving Quadratics w/ Quad Formula & Square Roots

Solve: 4x² - 1 = 48

• x = 7/2 or -7/2
• x = 2/7 or -2/7
• x = 49/4 or -49/4
• x = 47/4 or -47/4

Solve for x
3x² = -60

• ±2i√5
• √20
• √60
• ±√30

Tags

CCSS.8.EE.A.2

Solve
(x-5)² = 25

• ±0
• ±10
• 10, 0
• -10, 0

Tags

CCSS.8.EE.A.2

Solve
(x+3)²-5 = 9

• ±√14 -3
• √14 - 3
• ±11
• ±5

Tags

CCSS.HSA-REI.B.4B

Which is a solution to 3x² + 2 = 0

• 1
• (√6/3)i
• (⅔)i
• ⅔

Solve

(x-3)² = -20

• ±√17
• ±2i√5 +3
• ±2√5 +3
• ±i√17

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

In the equation
y = x² +5x +7, match each leading coefficient with its correct letter 

• a=0, b=5, c=7
• a=1, b=5, c=7
• a=7, b=5, c=1

Tags

CCSS.HSA.APR.A.1

CCSS.HSA.SSE.A.1

Name "c" for the equation
4x² - 5x + 7 = 10

• 7
• 17
• -5
• -3

Tags

CCSS.HSA-REI.B.4B

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.