Solving quadratic equations by factoring

• p = –5

• p = 7

• p = 5

• p = –7

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSA-REI.B.4B

• b = 3

• b = –5

• b = –3

• b = 5

Tags

CCSS.HSA-REI.B.4B

Which is a zero of the graph?

• 0
• -1
• 1.5
• -3

Tags

CCSS.HSA.APR.B.3

To solve a quadratic by graphing is to find where the parabola crosses the x-axis. We call these the ___. Select all that apply.

• zeroes

• x-intercepts

• solutions

• roots

Solve by factoring: x² = 7x + 18 (x-method)(Move everything to one side)

• -7 and -18

• 9 and 2

• 9 and -2

• 2 and 7

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:  2x²+ 7x + 6 = 0 (x-method)

• x= 3/2 and x = 2
• x = -3/2 and x = -2
• x = 6 and x = 7
• x = -6 and x = -7

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:
x² - 9x = 0

(x-method)

• 9
• 0, 9
• -9, 0
• -9

Tags

CCSS.HSA-REI.B.4B

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

• Get factored form
• Find two numbers which add to make 6 and multiply to make -13
• Make it equal 0 by subtracting 3 on each side
• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

Tags

CCSS.HSA-REI.B.4B