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anzhelika [568]
3 years ago
10

Using the quadratic formula to solve x2 35-x, what are the values of x?

Mathematics
1 answer:
Gala2k [10]3 years ago
8 0

Answer:

x = (-1 ± √21) / 2

The first choice

Step-by-step explanation:

x² = 5 - x

Put in standard form

x² + x - 5 = 0

Use quadratic equation

x = ( -b ± √( b² - 4ac) ) / (2a)

Plug in a = 1, b = 1 , c = -5

x = (-1 ± √( 1² - 4*1*(-5)) ) / 2

evaluate

x = (-1 ± √21) / 2

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Step-by-step explanation:

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By definition, when a test or technique measures what it intends to, it is a. valid. b. reliable. c. significant. d. generalizab
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