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Answer:
[tex]The given series is a classic infinity sum that I really enjoy doing
Let x=3+3+3+3+3+.........∞−−−−−−−−−−−−√−−−−−−−−−−−−−−−−√−−−−−−−−−−−−−−−−−−−−−√−−−−−−−−−−−−−−−−−−−−−−−−−−√−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−√.....(1)x=3+3+3+3+3+.........∞.....(1)
⟹x=3+[3+3+3+3+.........∞−−−−−−−−−−−−√−−−−−−−−−−−−−−−−√−−−−−−−−−−−−−−−−−−−−−√−−−−−−−−−−−−−−−−−−−−−−−−−−√]−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−√⟹x=3+[3+3+3+3+.........∞]
⟹x=3+x−−−−−√[using (1)]⟹x=3+x[using (1)]
⟹x2=(3+x−−−−−√)2⟹x2=(3+x)2
⟹x2=3+x⟹x2=3+x
⟹x2−x−3=0⟹x2−x−3=0
let's put it in the form of ax2+bx+c=0let's put it in the form of ax2+bx+c=0
a=1,b=−1,c=−3.a=1,b=−1,c=−3.
⟹x=−b±b2−4ac−−−−−−−√2a⟹x=−b±b2−4ac2a
⟹x=−(−)1±(−1)2−(−12)−−−−−−−−−−−−√2×1⟹x=−(−)1±(−1)2−(−12)2×1
⟹x=1±13−−√2⟹x=1±132
⟹3+3+3+3+3+.........∞−−−−−−−−−−−−√−−−−−−−−−−−−−−−−√−−−−−−−−−−−−−−−−−−−−−√−−−−−−−−−−−−−−−−−−−−−−−−−−√−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−√=⟹3+3+3+3+3+.........∞=
1±13−−√21±132
Step-by-step explanation:
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