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stFarcorboltorieRo
stFarcorboltorieRo stFarcorboltorieRo
  • 31-07-2016
  • Mathematics
Answered

Twenty times the square of a non-zero number is equal to 20 times the number ! What is the number ?

Verified Answer :

dalendrk
dalendrk dalendrk
  • 31-07-2016

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

Answer Link
Ckaranja
Ckaranja Ckaranja
  • 07-08-2016

20*\(x^{2} =20x\)
Divide both sides by 20x
x=1

Answer Link

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