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Elina [12.6K]
3 years ago
5

What number must you add to complete the square? x^2 + 24x = 17

Mathematics
1 answer:
kenny6666 [7]3 years ago
6 0

Complete the square: x^2 + 24x = 17

Identify the coefficient of x. It is 24. Take half of that coefficient: 24/2 = 12.

Now add the square of 12 to both sides of x^2 + 24x = 17

x^2 + 24x + 144 = 17 + 144

Write in factored form:

(x + 12)^2 = 161

Taking the square root of both sides:

x+12 = plus or minus

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Answer:

$167.2

Step-by-step explanation:

It has been given that the price of a new computer is $800.00 and refurbished computer with the same equipment has a  price of $640.00.

Let us find the amount that we will save with a refurbished computer if we put the difference into the savings account for a year using simple interest formula.  

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Upon substituting our given values in above formula we will get,

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