Three consecutive positive integers are such that the sum of square of second integer and the
product of first and third integer is 49. Find the integers.
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16
let the consecutive positive integers be,
x, x+1, x+2
Given-
Sum of :
Sq. of 2nd integer= (x+1)²
Product of 1st and 3rd integers= (x)(x+2)
Total sum = 49
Find-
The actual integers.
Solution-
(x+1)² + x(x+2)=49
(x²+2x+1) +x²+2x = 49
x²+2x+1 +x²+2x = 49
2x²+4x+1 = 49
2x²+4x = 49-1 [by transposition]
2x²+4x = 48
2x²+x = 48/4
2x²+x = 12
x²+x = 12/2
x²+x = 6
x+x = √6
2x = √3×2
x = √3×2 =√3
2
x = √3
Hope it helps!
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