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nika2105 [10]
3 years ago
7

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

Mathematics
1 answer:
algol [13]3 years ago
8 0

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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Read 2 more answers
Which expression represents the phrase "twice the difference of a number and 5"?
KatRina [158]

The expression that represents the phrase "twice the difference of a number and 5" is 2(x - 5).

<h3>What is the expression that represents the phrase?</h3>

The difference of a number and 5 is given by:

x - 5.

As we don't know the number, hence we call it x.

Twice that is:

2(x - 5).

Hence the expression that represents the phrase "twice the difference of a number and 5" is 2(x - 5).

A similar problem, in which the expression that represents a phrase is found, is given at brainly.com/question/2164351

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