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From the sum of x^2 - y^2 - 1, y^2 - x^2...

From the sum of `x^2 - y^2 - 1, y^2 - x^2 - 1 and 1 - x^2 - y^2 " subtract " - (1 + y^2)`.

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NCERT EXEMPLAR-ALGEBRAIC EXPRESSIONS-Exercise
  1. If A = 3x^2 - 4x + 1, B = 5x^2 + 3x - 8 and C = 4x^2 - 7x + 3, then fi...

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  2. If P = -(x - 2), Q = -2(y +1) and R = -x + 2y, find a, when P+ Q + R...

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  3. From the sum of x^2 - y^2 - 1, y^2 - x^2 - 1 and 1 - x^2 - y^2 " subtr...

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  4. Subtract the sum of 12ab-10b^2 -18a^2 and 9ab + 12 b^2+ 14a^2 " from t...

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  5. Each symbol given below represents an algebraic expression: The s...

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  6. Arjun bought a rectangular plot with length x and breadth y and then s...

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  7. Amisha has a square plot of side m and another triangular plot with ba...

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  8. A taxi service charges Rs. 8 per km and levies a fixed charge of Rs.50...

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  9. Shiv works in a mall and gets paid 50 per hour. Last week he worked fo...

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  10. Sonu and Raj have to collect different kinds of leaves for science pro...

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  11. A school has a rectangular play ground with length x and breadth y and...

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  12. The rate of planting the grass is x per square metre. Find the cost o...

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  13. Find the perimeter of the figure given below:

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  14. In a rectangular plot, 5 square flower beds of side (x+2) metres each ...

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  15. A wire is (7x - 3) metres long. A length of (3x - 4) metres is cut for...

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  16. A wire is (7x - 3) metres long. A length of (3x - 4) metres is cut for...

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  17. Rohan's mother gave him 3xy^2 and his father gave him 5(xy^2 +2). Out ...

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  18. A triangle is made up of 2 red sticks and 1 blue sticks length of a...

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  19. The sum of first n natural numbers is given 1/2 n^2 +1/2n. Find (i...

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  20. The sum of squares of first n natural numbers is given by 1/6 n (n+1)(...

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