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Twenty times the square of a non-zero number is equal to 20 times the number ! What is the number ?
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Twenty times the square of a non-zero number is equal to 20 times the number ! What is the number ?
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Nov 7, 2017
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Twenty times the square of a non-zero number is equal to 20 times the number ! What is the number ?
Mathematics
high-school
Jayesh Thanki
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Jayesh Thanki
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x-the number
20 · x² = 20 · x |divide both sides by 20
x² = x |subtract x from both sides
x² - x = 0
x(x - 1) = 0 ⇔ x =0 or x - 1 = 0
Answer: x = 0 or x = 1
Blakharaz
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Nov 7, 2017
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Blakharaz
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20*
Divide both sides by 20x
x=1
Aestrivex
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Nov 13, 2017
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Aestrivex
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