Solving Quadratics in Standard Form

Tags

CCSS.HSA-REI.B.4B

Factor the polynomial: 
x² + 7x - 18

• (x + 2)(x - 9)

• (x - 6)(x + 3)

• (x - 2)(x + 9)

• (x + 6)(x + 3)

Solve by factoring:
x² - 6x + 5 = 0

• -6, -1

• -5, -1 

• 1, 6

• 5, 1

Tags

CCSS.HSA-REI.B.4B

Solve by factoring:
x² - 9x = 0

• 9

• 0, 9

• -9, 0

• -9

Tags

CCSS.HSA-REI.B.4B

Solve for x:

(x - 9)(x + 3) = 0

• x = 3 or x = 9

• x = 3 or x = -9

• x = -3 or x = 9

• x = -3 or x = -9

Tags

CCSS.HSA-REI.B.4B

Solve for x by factoring:

x² - 49 = 0

• x = -7, x = 7

• x = -7

• x = 7

• x = -7, x = 1

Tags

CCSS.HSA-REI.B.4B

Find the solutions to 3x² + 18x +10= -5

• x = -5 and -1

• x = 5 and 1

• x = 0 and 5

• x = -2 and 4

Tags

CCSS.HSA-REI.B.4B

x² + 44 = -15x

• {-8, 2}

• {-7, 5}

• {-11, -4}

• {-11}

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.

Tags

CCSS.HSA-REI.B.4B

Solve: b² = -35 + 12b RE-ARRANGE AND FACTOR

• b = 5 and 7

• b = -5 and -7

• b = -5 and 7

• b = 5 and -7

Tags

CCSS.HSA-REI.B.4B