Solve Perfect Square Quadratics

What value of c would make this a perfect square trinomial? x² +8x + c

• 4

• 16

• 64

• 8

Solve the following quadratics equation by completing the square...

x² - 12x + 31 = 0

• x = -6 ± √5

• x = 6 ± √5

• x = 5 ± √6

• x = -5 ± √6

Solve the following quadratics equation by completing the square...

x² - 10x - 5 = 0

• x = -5 ± √30

• x = 5 ± √30

• x = 30 ± √5

• x = -30 ± √5

Find the value of "c" that completes the square. Then rewrite the trinomial as a perfect square.

Find the value of "c" that completes the square. Then rewrite the trinomial as a perfect square.

Which equation would be the result of solving the following quadratic equation using completing the square?

• (x + 3)² = 5

• (x + 6)² = 9

• (x + 3)² = 14

• (x + 6)² = 14

When re-writing the left side of x² - 4x + 4 = 20 as a perfect square, what goes in the blank? (x ___ )² = 20

• 4

• -2

• 2

• 20

Complete the square for x² + 12x + ____ (find the missing number in the blank)

• x² + 12x + 144

• x² + 12x + 36

• x² + 12x - 36

• x² + +12x - 144

What is the first step to solving the equation below 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