Alg. 1 Unit 8 Quadratics Part 1 Review

What should you do first if solving this equation by factoring?

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.

• two numbers that multiply to -30 and add to -1

• two numbers that multiply to -15 and add to -1

• two numbers that multiply to -1 and add to -30

• two numbers that multiply to -1 and add to -15

Simplify √56

• 4√14
• 2√14
• 2√27
• 4√7

Solve for m.
4m² + 10 = 38

• m = 7, -7
• m = 7
• m = √7
• m = √7, -√7

Solve

4(x+9)²=24

• -9+√6, -9-√6

• 3 & -3

• 3

• 9-√8, 9+√8

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

When factoring x² - 4x + 4 = 20,

after completing the square,

what goes in the blank? (____ )² = 20

• x-4

• x-2

• x+20

• x+8

Solve the following equation by completing the square:
n² - 2n - 3 = 0

• {3, -1}
• {4, -4}
• {5, -3}
• {8, -7}

Determine the values of
a, b, and c for
the quadratic equation: 
4x² – 8x = 3

• a = 4, b = -8, c = 3
• a = 4, b =-8, c =-3
• a = 4, b = 8, c = 3
• a = 4, b = 8, c = -3