Question

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What constant term should be used to complete the square?

x^2 - 5x + _____ = 7
a) 49/25
b) 25/4
c) 4/25
d) -49/25

Answer 1

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Answer 2

x^2 - 5x +______ =7
x^2 - 5x +25/4 - 25/4 =7
(x-5/2)^2 =53/4

so to complete the square we need to add 25/4