Class 9 Exam > Class 9 Questions > If, the value of x3– y3is :a)1b)1/2c)0d...
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If 
, the value of x3 – y3 is :
, the value of x3 – y3 is :- a)1
- b)1/2
- c)0
- d)-1
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
If, the value of x3– y3is :a)1b)1/2c)0d)-1Correct answer is opti...
- Create a common denominator:
- Multiply both sides of the equation by xy to get rid of the fractions:
- x² + y² = -xy
- Multiply both sides of the equation by xy to get rid of the fractions:
- Rearrange the equation:
- Add xy to both sides:
- x² + xy + y² = 0
- Add xy to both sides:
- Substitute the values in: x³ - y³ = (x - y)(x² + xy + y²)
- We also know x² + xy + y² = 0 from step 2.Substitute these values into the identity:
- x³ - y³ = (x-y)(0) = 0
Therefore, the value of x³ - y³ is 0.
So, the correct answer is option 3.
Most Upvoted Answer
If, the value of x3– y3is :a)1b)1/2c)0d)-1Correct answer is opti...
X/y+y/x=-1 X2+y2/xy=-1 x2+y2=-xy x2+y2+xy=0 now, x3-y3=(x-y) (x2+y2+xy) 0
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Community Answer
If, the value of x3– y3is :a)1b)1/2c)0d)-1Correct answer is opti...
Formula , x³ - y³ =(x- y) (x² +xy +y²) , = x² +y² +xy = 0 ,( x -y ) (x² + xy + y²) =0 , x³ -y ³= 0 .. correct answer is option c ) 0
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If, the value of x3– y3is :a)1b)1/2c)0d)-1Correct answer is option 'C'. Can you explain this answer? 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 If, the value of x3– y3is :a)1b)1/2c)0d)-1Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If, the value of x3– y3is :a)1b)1/2c)0d)-1Correct answer is option 'C'. Can you explain this answer?.
If, the value of x3– y3is :a)1b)1/2c)0d)-1Correct answer is option 'C'. Can you explain this answer? 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 If, the value of x3– y3is :a)1b)1/2c)0d)-1Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If, the value of x3– y3is :a)1b)1/2c)0d)-1Correct answer is option 'C'. Can you explain this answer?.
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