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Please tell how to slove ques. 72 please tell me the method used to solve it
3 years ago

Shubham Kaushal
24 Points
Let {x} is fraction part of x. Then [x]=x-{x} and (x)=x+1-{x}. Now substitute these in equation.(x)^2=[x]^2+2x(x+1-{x})^2=(x-{x})^2+2xNow(x+1-{x})^2-(x-{x})^2=2x,Now apply identity a^2-b^2=(a+b)×(a-b).2x+1-2{x}=2x,{x}=1/2

3 years ago
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### Course Features

• 101 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions