1 If two numbers differ by 2 and their product is 360,
then find the numbers.
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Answer:
Given : Two numbers differ by 2.
Let us assume that one number be x.
So, other number = x - 2
According to the question,
=> x(x - 2) = 360
=> x² - 2x - 360 = 0
=> x² - 20x + 18x - 360 = 0
=> x(x - 20) + 18(x - 20) = 0
=> (x + 18) (x - 20) = 0
=> x = - 18 or x = 20
Substituting the both value of x to get the other number :
= - 18 - 2 = - 20
or, 20 - 2 = 18
Answer : The numbers are - 18 and - 20 or 20 and 18.
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