TEKS.MATH.9-12.II.C.1

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• Set the equation equal to zero
• Divide 10 by 2 and add the result to both sides
• Add a² and 10a together
• Subtract the 21

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TEKS.MATH.9-12.II.C.1

What are the x- intercepts?

• x= 0 and x= -4
• x= 0 and x= 4
• y= 0
• x= 2

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TEKS.MATH.9-12.II.C.1

9k² = 225

• 4
• 4, -4
• 25, -25
• -5, 5

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TEKS.MATH.9-12.II.C.1

3c + 5 = 23

• c = 3
• c = 6
• c = 7
• c = 18

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TEKS.MATH.9-12.II.C.1

Solve by factoring: 5x² + 13x + 6 = 0

• x = -2 and x = -3/5
• x = 2 and x = 3/5
• x = -2 and x = 3/5
• x = 2 and x = -3/5

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TEKS.MATH.9-12.II.C.1

Solve by factoring.
x² + 2x - 8 = 0

• 4 and 2
• 4 and -2
• -4 and 2
• -4 and -2

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TEKS.MATH.9-12.II.C.1

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.

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TEKS.MATH.9-12.II.C.1

Solve:
2x² - 9x = 35

• x = 7/2, x = -6
• x = -5/2, x =5
• x = -3/7, x =6
• x = -5/2, x = 7

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TEKS.MATH.9-12.II.C.1

Solve: 9^8-x = 27^x-3

• x = 5

• x = -5

• x = 1/5

• x = -1/5

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TEKS.MATH.9-12.II.C.1

TEKS.MATH.9-12.II.A

What slope is parallel to:  
m = 4

• 4
• -1/4
• -4
• 1/4

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TEKS.MATH.9-12.II.C.1