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What number must you add to complete the square? x^2 + 4x = 13 A. 16 B. 8 C. 2 D. 4 Please help.

What number must you add to complete the square? x^2 + 4x = 13 A. 16 B. 8 C. 2 D. 4 Please help.
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5 votes
What number must you add to complete the square? x^2 + 4x = 13

A. 16
B. 8
C. 2
D. 4

Please help.

asked
User Kamrul Khan
by
7.9k points

1 Answer

3 votes
u take half of 4, which is 2, and square it, which is 2^2 = 4....u would then add 4 to both sides
answered
User Josh Wood
by
8.2k points
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