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What number must be added to the expression below to complete the square? x2 + 5x a:25 b:25/4 c:5/2 d:5
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What number must be added to the expression below to complete the square? x2 + 5x a:25 b:25/4 c:5/2 d:5
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Mar 3, 2018
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What number must be added to the expression below to complete the square? x2 + 5x
a:25
b:25/4
c:5/2
d:5
Mathematics
high-school
Medinoc
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Medinoc
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You halve the linear coefficient, square that value, and add it.
In this case the linear coefficient is 5 so:
(5/2)^2
25/4
Alexander Ejbekov
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Mar 4, 2018
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Alexander Ejbekov
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Completing the square would be (b/2)^2, where b here is equal to 5. (5/2)^2 would be 25/4, which would be choice B.
Saki
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Mar 9, 2018
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Saki
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