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Inga [223]
4 years ago
13

What number must be added to the expression below to complete the square? x2 + 5x

Mathematics
2 answers:
Alex17521 [72]4 years ago
6 0
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
Andreyy894 years ago
4 0
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. 
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