7) The sum of the page numbers of two facing
pages of a book is 85. What are the page
numbers of two facing pages of the book.
If the sum is not given, but the product is
given to be 1806, how will you find the page
numbers?
Answers
Answered by
10
Answer:
The pages are 42 and 43
Step-by-step explanation:
Let the pages be x and x+1
x+x+1 = 85
2x = 85-1
2x = 84
x = 84/2
x = 42
So the page numbers are 42 and 43
IF SUM IS NOT GIVEN AND PRODUCT IS GIVEN :
x(x+1) = 1806
x²+x-1806 = 0
By splitting middle term
x²+43x - 42x - 1806 = 0
x(x+43)-42(x+43) =0
(x-42)(x+43) = 0
x = 42
So the pages are 42 and 43
Answered by
10
Answer:
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