the sum of square of two consecutive natural number is 244 find the number
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Step-by-step explanation:
Let the two consecutive natural numbers be x and x+2
Sum of squares of these two consecutive natural numbers is 244
x
2
+(x+2)
2
=244
⇒x
2
+x−6=84
⇒x
2
+x
2
+4+4x=244
⇒2x
2
+4x−240=0
⇒x
2
+x−120=0
⇒x=
2a
−b±
b
2
−4ac
⇒x=
2
−2±
2
2
−4×1×(−120)
⇒x=
2
−2±
4+480
⇒x=
2
−2±
484
⇒x=
2
−2±22
⇒x=
2
−2+22
,
2
−2−22
⇒x=
2
20
,
2
−24
⇒x=10,−12
But age cannot be negative so,
The two numbers are 10 and 10+2=12.
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