Solving Ax² + Bx = C

Can this quadratic be solved by BOTH square root method AND difference of squares?
16x² - 25 = 0

• Yes!

• No - just square root method

• No - just difference of squares method

Tags

CCSS.HSA-REI.B.4B

The first step in solving quadratic equations is to . . .

• factor

• write the equation in standard form

• use quadratic formula

• complete the square

Tags

CCSS.HSA-REI.B.4B

Determine the values of a, b, and c for the quadratic equation:

4x² – 8x = 3

*Reminder: the equation MUST equal zero.

• a = 4, b = -8, c = 3

• a = 4, b =-8, c =-3

• a = 4, b = 8, c = 3

• a = 4, b = 8, c = -3

Use the quadratic formula to solve for x:

2x² + 2x - 12 = 0

• x = -2 x = 3

• x = 2 x = 3

• x = 2 x = -3

• x = -2 x = -3

Tags

CCSS.HSA-REI.B.4B

Solve using the quadratic formula.
2x² - 9x - 35 = 0

• x = 7/2, x = -6

• x = -5/2, x =5

• x = -3/7, x =6

• x = -5/2, x = 7

Tags

CCSS.HSA-REI.B.4B

Use the quadratic formula to solve for x:

x² + 4x - 40 = -8

• x = -10 & x = -4

• x = -4 & x = 10

• x = -8 & x = 4

• x = 8 & x = -4

Tags

CCSS.HSA-REI.B.4B

What should you do first in solving this equation?

x² + 6x - 13 = 3

• Factor

• Write down: a = 1, b = 6, c = -13

• Subtract 3 from both sides.

• Add 3 to both sides.

Tags

CCSS.HSA-REI.B.4B

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

• No Real Solution

• 
• 
• 

Tags

CCSS.HSA-REI.B.4B

What are the solutions?

• -2, 1

• 1, 2

• -1,2

• 0,-4

What are the solutions?

• -.5, 3.5

• 0,6

• -2.5, 4.5

• -1, 4