Completing the Square (Continued)

Question 1

What is the first step in writing f(x) = 3x2 + 6x – 8 in vertex form?

Revolt · Accepted Answer

Factor out 3 from the first two terms.

Question 2

x = –45✔ x = –3x = 3x = 45

Revolt · Accepted Answer

✔ x = –3

Question 3

Write g(x) = 4x2 + 88x in vertex form.

Revolt · Accepted Answer

82577; -484

Question 4

Question 82578

Revolt · Accepted Answer

-484

Question 5

Write p(x) = 21 + 24x + 6x2 in vertex form.

Revolt · Accepted Answer

p(x) = (x + )2 –: 6; p(x) = (x + )2 –: 2; p(x) = (x + )2 –: 3

Question 6

✔ 241224

Revolt · Accepted Answer

✔ 2

Question 7

✔ 372124

Revolt · Accepted Answer

✔ 3

Question 8

Compare the graphs that Jennifer and Matt drew by completing the statements.

Revolt · Accepted Answer

✔ 2 units down; Jennifer’s graph is vertically shifted from Matt’s graph.: 2 units down

Completing the Square (Continued) Answers