Question

root 20+root20.....infinity​

Answer 1

Answer:

Step-by-step explanation:

Letx=20+2020+20−−√⋯−−−−−−−−−−√−−−−−−−−−−−−−−√−−−−−−−−−−−−−−−−−−−−√  

⟹x2=20+20+2020+20−−√⋯−−−−−−−−−−√−−−−−−−−−−−−−−√−−−−−−−−−−−−−−−−−−−−√  

⟹x2=20+x  

⟹x2−x−20=0  

⟹x2−5x+4x−20=0  

⟹x(x−5)+4(x−5)=0  

⟹(x−5)(x+4)=0  

⟹x−5=0x+4=0

⟹x=5,−4

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