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4 votes
What number must you add to complete the square?

X2 + 12x = 40
x2
o
A. 36
B. 20
(
C. 6
O
O
D. 5
х

User Serk
by
8.0k points

1 Answer

1 vote

Answer:

36

Explanation:

x^2 + 12 x = 40

To complete the square, take the coefficient of the x term

12

Divide by 2

12/2 = 6

Square it

6^2 = 36

Add 36 to each side

User Graham Lee
by
7.2k points

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