Class 8 Exam  >  Class 8 Questions  >  If x + y = 10 and xy = 9, what is the value o... Start Learning for Free
If x + y = 10 and xy = 9, what is the value of x2 – y2?
  • a)
    40
  • b)
    60
  • c)
    80
  • d)
    90
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c...
( x + y) 2 = x2 + y2+ 2xy


∴ 
View all questions of this test
Most Upvoted Answer
If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c...
To find the value of x^2, we need to find the value of x and then square it.

Given that xy = 9, we can substitute the value of xy into the equation x * y = 10:

x * y = 10
x * 9 = 10
x = 10/9

Now we can square x:

x^2 = (10/9)^2
x^2 = 100/81

Therefore, the value of x^2 is 100/81.
Free Test
Community Answer
If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c...
80
Attention Class 8 Students!
To make sure you are not studying endlessly, EduRev has designed Class 8 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 8.
Explore Courses for Class 8 exam

Top Courses for Class 8

If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c)80d)90Correct answer is option 'C'. Can you explain this answer?
Question Description
If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c)80d)90Correct answer is option 'C'. Can you explain this answer? for Class 8 2024 is part of Class 8 preparation. The Question and answers have been prepared according to the Class 8 exam syllabus. Information about If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c)80d)90Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 8 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c)80d)90Correct answer is option 'C'. Can you explain this answer?.
Solutions for If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c)80d)90Correct answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 8. Download more important topics, notes, lectures and mock test series for Class 8 Exam by signing up for free.
Here you can find the meaning of If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c)80d)90Correct answer is option 'C'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c)80d)90Correct answer is option 'C'. Can you explain this answer?, a detailed solution for If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c)80d)90Correct answer is option 'C'. Can you explain this answer? has been provided alongside types of If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c)80d)90Correct answer is option 'C'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice If x + y = 10 and xy = 9, what is the value of x2 – y2?a)40b)60c)80d)90Correct answer is option 'C'. Can you explain this answer? tests, examples and also practice Class 8 tests.
Explore Courses for Class 8 exam

Top Courses for Class 8

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev