What number must be added to the expression below to complete the square? x^2-18x a: -9 b: 9 c: 81 d: -81

asked Jun 10, 2018 162k views

5 votes

What number must be added to the expression below to complete the square?

x^2-18x
a: -9
b: 9
c: 81
d: -81

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5 votes

Answer:

Explanation:

Kovo answered Jun 13, 2018

by Kovo

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The answer is C. You would take -18 and divide by two and get -9. Then square this to get 81. That is your answer, hope this helps!

James Ikubi answered Jun 17, 2018

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