The sum of two integersis 81. If the product y1088, what are the integers
Mathematics · College · Mon Jan 18 2021
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Let the first integer be x
And, 2nd integer be y
Then, according to question
x + y = 81 …1
xy = 1088 …2
From equation 1, we have
y = 81 - x …3
Now, putting value of y in equation 2, we get
x(81 - x) = 1088
81x - x² = 1088
x² - 81x + 1088 = 0
Now, by middle-term split method
x² - 64x - 17x + 1088 = 0
x(x - 64) - 17(x - 64) = 0
(x - 64) (x -17) = 0
x -64 = 0
x = 64
And, x - 17 = 0
x = 17
So, when x = 64
y = 81 - 64
y = 17
And when x = 17
y = 81 - 17
y = 64