Janakpuri Gandhi Market, Delhi, India - 110046
Verified 20+ yrs of Exp 
12
Details verified of Umesh Kumar✕
Identity
Education
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Identity is verified based on matching the details uploaded by the Tutor with government databases.
2 Students Class Location
Online class via Zoom
Student's Home
Tutor's Home
Years of Experience in Class 12 Tuition
20+
Board
CBSE
Preferred class strength
Group Classes, One on one/ Private Tutions
Subjects taught
Mathematics
Taught in School or College
No
Class Location
Online class via Zoom
Student's Home
Tutor's Home
Years of Experience in Class 11 Tuition
20+
Board
CBSE
Preferred class strength
Group Classes, One on one/ Private Tutions
Subjects taught
Mathematics
Taught in School or College
No
Teaching Experience in detail in Class 11 Tuition
I have been teaching since 1998 when I was in college. I decided to become a professional tutor. I have taught in many coaching centers . Nowadays I am teaching in Teaching Point Tutorials , Inder Puri (NEW DELHI).My 27 year experience makes me hard worker therefore I believe in hard work and perfect practice. I can teach Mathematics of 9th, 10th, 11th, 12th according to NCERT syllabus as well as any other Indian secondary and senior secondary syllabus.
Class Location
Online class via Zoom
Student's Home
Tutor's Home
Years of Experience in Class 10 Tuition
20+
Board
CBSE
Preferred class strength
Group Classes, One on one/ Private Tutions
Experience in School or College
I have been teaching since 1998 when I was in college. I decided to become a professional tutor. I have taught in many coaching centers . Nowadays I am teaching in Teaching Point Tutorials , Inder Puri (NEW DELHI).
Subjects taught
Mathematics
Taught in School or College
Yes
Class Location
Online class via Zoom
Student's Home
Tutor's Home
Years of Experience in BCom Tuition
20+
BCom Subject
Business Mathematics and Statistics
Type of class
Regular Classes
Class strength catered to
Group Classes, One on one/ Private Tutions
Taught in School or College
No
Teaching Experience in detail in BCom Tuition
I have been teaching since 1998. More than 20 year experience.
4.9 out of 5 9 reviews
Urvi Chaudhary
Class 10 Tuition Board of Education:CBSE Subjects:Mathematics
"The classes are very well explained and interactive. Doubts are cleared properly, and regular practice has improved my understanding and speed in maths. Thank you for your efforts and support. "
Vedanshi Kaushik
Class 10 Tuition Board of Education:CBSE Preferred class strength:One on one/ Private Tutions Subjects:Mathematics
"A good tutor is not just a teacher, but also a guide and motivator. A tutor explains difficult topics in a simple way and helps students learn with patience and confidence. They encourage students to do their best, clear all doubts, and make learning interesting and enjoyable. A great tutor inspires students to believe in themselves and achieve success in life. "
Geeth Gambhir
Class IX-X Tuition Board of Education:CBSE
"Very good teacher We have fun in every class I am able to understand each and every concept from each chapter"
Anvi
Class 12 Tuition Board of Education:CBSE Preferred class strength:Group Classes Subjects:Mathematics
"It was a wonderful experience being taught by sir. His teaching style, patience, and emotional support truly helped me a lot. "
Georshlin
Class 10 Tuition Board of Education:CBSE Preferred class strength:Group Classes Subjects:Mathematics
"Very amazing, wonderful, enriching experience. Best sir ever Classes are very fun, and I like coming here. "
Eshaan Arora
Class IX-X Tuition Board of Education:CBSE
"They are serious about the results, but they make the process of getting there much more enjoyable.. "
Shalu Joshi
Class IX-X Tuition Board of Education:CBSE
"The teacher was quite friendly my daughter felt comfortable studying with them she is also able to understand the concepts. "
Unnati
Class 12 Tuition Board of Education:CBSE Preferred class strength:Group Classes Subjects:Mathematics
"Umesh sir is a very good teacher. He explains concepts in a very fun way. I started loving mathematics after joining his classes. "
Prabhmeet Singh
Class 12 Tuition Board of Education:CBSE Preferred class strength:Group Classes Subjects:Mathematics
"My experience was wonderful, I looked forward to these classes often and my scores got better once I joined. "
Answered on 23/06/2019
It is Given that
x² +y² +z² = xy - yz - zx
⇒ x² +y² +z² - xy - yz - zx = 0 ...........(i)
Since,
x³ + y³ +z³ - 3xyz = (x + y+ z)( x² +y² +z² - xy - yz - zx)
then
x³ + y³ +z³ - 3xyz = (x + y+ z) x 0 .... (from i )
x³ + y³ +z³ - 3xyz = 0
x³ + y³ +z³ = 3xyz
Hence, if x² +y² +z² = xy - yz - zx then x³ + y³ +z³ = 3xyz
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