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What number must you add to complete the square? x^2-16x=23 A. -8 B. 8 C. -64 D. 64

What number must you add to complete the square? x^2-16x=23 A. -8 B. 8 C. -64 D. 64
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What number must you add to complete the square?

x^2-16x=23

A. -8
B. 8
C. -64
D. 64

asked
User Illana
by
7.1k points

1 Answer

4 votes
x² - 16x =23

16/2= 8; 8²=64 add 64 to both sides of the equation

x² - 16x + 64 = 23 + 64

the answer is D.
answered
User Bob Liberatore
by
8.9k points
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