If the remainder obtained by subtracting a number from its own square is 4 times the number, what is the number?
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Answered by
20
Answer:
5
Step-by-step explanation:
Let the number be x
According to question
square of the number - number = 4 times the number
x² - x = 4x
x² - 5x = 0
x(x - 5) = 0
x - 5 = 0
x = 5
∴ Desired Number is 5
Check
5² - 5
= 25 - 5
= 20 which is 4 times of 5
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