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Licemer1 [7]
3 years ago
11

Explain how you would estimate to subtract 189 from 643

Mathematics
2 answers:
aliya0001 [1]3 years ago
8 0
Well frist you cant do 189 from 643. u have to do 643 - 189.and that well be 743
Elodia [21]3 years ago
5 0
643 will round to 600 and 189 will round to 299 so 600 - 200 = 400
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Answer:

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Step-by-step explanation:

Given

4x² - 4x + 1 = 0

To complete the square the coefficient of the x² term must be 1

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= 4(x² - x) + 1 = 0

add/subtract ( half the coefficient of the x- term )² to x² - x

4(x² + 2(- \frac{1}{2} )x + \frac{1}{4} - \frac{1}{4} ) + 1 = 0

4(x - \frac{1}{2} )² - 1 + 1 = 0

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2 years ago
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jasenka [17]
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Please help I will give brainiest to the right answer!!!!!!!! Please Help!!! ASAP!!!!
Dafna11 [192]

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arithmetic

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