justin4881 justin4881

13-06-2019
Mathematics

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What number must you add to complete the square?
x2 - 18x= 29

Respuesta :

jimrgrant1 jimrgrant1

13-06-2019

Answer:

81

Step-by-step explanation:

Given

x² - 18x = 29

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 9)x + (- 9)² = 29 + (- 9)²

x² + 2(- 9)x + 81 = 29 + 81

(x - 9)² = 110

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