Solving Quadratic Equations: Completing the Square

Question 1

c =[___]

Revolt · Accepted Answer

25

Question 2

[___]

Revolt · Accepted Answer

100

Question 3

Solve x2 + 12x = –20 by completing the square.

Revolt · Accepted Answer

Write the left side of the equation as a binomial squared. The left side of the equation becomes ()2.: x + 6; Isolate the variable: x =: –10 or –2

Question 4

x + 3x + 6x + 10x + 12

Revolt · Accepted Answer

+ 6

Question 5

–4 or 4–6 or 62 or 10–10 or –2

Revolt · Accepted Answer

–10 or –2

Question 6

Solve x2 + 8x = 33 by completing the square. Which is the solution set of the equation?

Revolt · Accepted Answer

{–11, 3}

Question 7

Which describes the solutions of the equation?

Revolt · Accepted Answer

Since 7 and 11 are both rational, the sum and difference are rational.

Question 8

What is the solution set of x2 – 10 = 30x?

Revolt · Accepted Answer

{15 – , 15 + }

Question 9

61036100

Revolt · Accepted Answer

36; Selection 1: 36; Selection 2: x + 6; Selection 3: –10 or –2

Solving Quadratic Equations: Completing the Square Answers