Class 9 Exam  >  Class 9 Questions  >  Can you explain the answer of this question b... Start Learning for Free
Can you explain the answer of this question below:
If   = 4, then  is equal to :-
 
  • A:
    196
  • B:
    194
  • C:
    192
  • D:
    190
The answer is b.
Verified Answer
Can you explain the answer of this question below:If= 4, thenis equal ...
x + 1/x = 4 → ( x + 1/x)2 
= 16 → x2 + 1/x2 + 2
= 16 → x2 +1/x2 = 14
Now,
x2 + 1/x2 = 14 → ( x2 + 1/x2)2
= 196 → x4 + 1/x4 + 2
= 196 → x4 +1/x4 
= 194.
View all questions of this test
Most Upvoted Answer
Can you explain the answer of this question below:If= 4, thenis equal ...
(x+1/x)² = (4)² x²+1/x²+2 =16 x²+1/x² = 14 (x²+1/x²)² = (14)² x⁴ +1/x⁴ +2 = 196 x⁴+1/x⁴ = 194
Free Test
Community Answer
Can you explain the answer of this question below:If= 4, thenis equal ...
x + 1/x = 4 → ( x + 1/x)2 
= 16 → x2 + 1/x2 + 2
= 16 → x2 +1/x2 = 14
Now,
x2 + 1/x2 = 14 → ( x2 + 1/x2)2
= 196 → x4 + 1/x4 + 2
= 196 → x4 +1/x4 
= 194.
Explore Courses for Class 9 exam
Question Description
Can you explain the answer of this question below:If= 4, thenis equal to :-A:196B:194C:192D:190The answer is b. for Class 9 2025 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Can you explain the answer of this question below:If= 4, thenis equal to :-A:196B:194C:192D:190The answer is b. covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Can you explain the answer of this question below:If= 4, thenis equal to :-A:196B:194C:192D:190The answer is b..
Solutions for Can you explain the answer of this question below:If= 4, thenis equal to :-A:196B:194C:192D:190The answer is b. in English & in Hindi are available as part of our courses for Class 9. Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of Can you explain the answer of this question below:If= 4, thenis equal to :-A:196B:194C:192D:190The answer is b. defined & explained in the simplest way possible. Besides giving the explanation of Can you explain the answer of this question below:If= 4, thenis equal to :-A:196B:194C:192D:190The answer is b., a detailed solution for Can you explain the answer of this question below:If= 4, thenis equal to :-A:196B:194C:192D:190The answer is b. has been provided alongside types of Can you explain the answer of this question below:If= 4, thenis equal to :-A:196B:194C:192D:190The answer is b. theory, EduRev gives you an ample number of questions to practice Can you explain the answer of this question below:If= 4, thenis equal to :-A:196B:194C:192D:190The answer is b. tests, examples and also practice Class 9 tests.
Explore Courses for Class 9 exam
Signup to solve all Doubts
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev