Questions by uday

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Classify the following polynomials as monomials, binomials, trinomials. Whichpolynomials do not fit in any of these three categories?`x + y, 1000, x + x^2 + x^3 + x^4, 7 + y + 5x, 2y – 3y^2, 2y – 3y^2 + 4y^3, 5x – 4y + 3xy, 4z – 15z^2, ab + bc + cd + da, pqr, p^2q + pq^2, 2p +

asked Jan 17, 2022 in 8th-maths

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Add the following. `l^2 + m^2, m^2 + n^2, n^2 + l^2, 2lm + 2mn +

asked Jan 17, 2022 in 8th-maths

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Subtract 3xy + 5yz – 7zx from 5xy – 2yz – 2zx +

asked Jan 17, 2022 in 8th-maths

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Complete the table for area of a rectangle with given length and

asked Jan 17, 2022 in 8th-maths

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Add `5m (3 – m)` and `6m^2 – 13m`

asked Jan 17, 2022 in 8th-maths

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Find the product. `(p^2 – q^2) (2p +

asked Jan 17, 2022 in 8th-maths

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Simplify. `(x^2 – 5) (x + 5) + 25`

asked Jan 17, 2022 in 8th-maths

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Simplify. `(t + s^2) (t^2 –

asked Jan 17, 2022 in 8th-maths

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Using Identity (II), find `(4p –

asked Jan 17, 2022 in 8th-maths

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Use the identity `(x + a) (x + b) = x^2 + (a + b) x + ab` to find the following products. `(2a^2 + 9) (2a^2 +

asked Jan 17, 2022 in 8th-maths

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Simplify. `(a^2 –

asked Jan 17, 2022 in 8th-maths

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Show that. `(9p – 5q)^2 + 180pq = (9p +

asked Jan 17, 2022 in 8th-maths

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Using identities, evaluate.

asked Jan 17, 2022 in 8th-maths

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Using `a^2 – b^2 = (a + b) (a – b)`, find `12.1^2 –

asked Jan 17, 2022 in 8th-maths

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Can a polyhedron have for its faces a square and four

asked Jan 17, 2022 in 8th-maths

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Is it possible to have a polyhedron with any given number of faces? (Hint: Think of a

asked Jan 17, 2022 in 8th-maths

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Using Euler’s formula find the

asked Jan 17, 2022 in 8th-maths

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A flooring tile has the shape of a parallelogram whose base is 24 cm and the corresponding height is 10 cm. How many such tiles are required to cover a floor of area 1080 `m^2`? (If required you can split the tiles in whatever way you want to fill up the

asked Jan 17, 2022 in 8th-maths

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The shape of the top surface of a table is a trapezium. Find its area if its parallel sides are 1 m and 1.2 m and perpendicular distance between them is 0.8 m.

asked Jan 17, 2022 in 8th-maths

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Mohan wants to buy a trapezium shaped field. Its side along the river is parallel to and twice the side along the road. If the area of this field is 10500 `m^2` and the perpendicular distance between the two parallel sides is 100 m, find the length of the side along the

asked Jan 17, 2022 in 8th-maths

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