Tiff817 Tiff817

25-10-2018
Mathematics

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What number must be added to the expression below to complete the square? X^2-7x

Respuesta :

lucasella lucasella

25-10-2018

Answer:

49/4

Step-by-step explanation:

x² -7x +(7/2)²=(x-7/2)²

x²-2x·7/2+ (7/2)²=(x²-7/2)²

(7/2)²=49/4

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