Solving Quadratics with Graphing Method, Square Root Method, and Factoring Method

What mathematical process did they use?

• Quadratic Formula

• Completing the Square

• Factoring

• Differentiation

Tags

CCSS.HSA-REI.B.4B

• ±81
• ±9
• ±3
• No real solution

Tags

CCSS.8.EE.A.2

Tags

CCSS.8.EE.A.2

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.

Tags

CCSS.HSA-REI.B.4B

Solve by factoring. (HINT: Factor GCF 1st)

• x = 3, x = -6

• x = 0, x = 2

• x = 2, x = 3

• x = -2, x = 1

Tags

CCSS.HSA-REI.B.4B

Solve by taking square roots:
5b² - 4 = 41

• b = 9, b = -9

• b = 3, b = -3

• b = 8, b = -8

• no solution

Tags

CCSS.HSA-REI.B.4B

• A
• B
• C
• D

Tags

CCSS.8.EE.A.2

• x = 18, x = -6

• x = 6, x = -18

• x = -6, x = 12

Tags

CCSS.HSA-REI.B.4B

Solve the quadratic with the square root method.

Tags

CCSS.HSA-REI.B.4B

Which is the graph the quadratic equation shown?

• A

• B

• C

• D

Tags

CCSS.HSF-IF.C.7A