Questions by purvi

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Draw a square of side 4.5

asked Jan 17, 2022 in 8th-maths

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Is 68600 a perfect cube? If not, find the smallest number by which 68600 must be multiplied to get a perfect

asked Jan 17, 2022 in 8th-maths

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Find the cube root of 13824 by prime factorisation

asked Jan 17, 2022 in 8th-maths

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State true or false. There is no perfect cube which ends with

asked Jan 17, 2022 in 8th-maths

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State true or false. The cube of a two digit number may be a three digit

asked Jan 17, 2022 in 8th-maths

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72% of 25 students are good in mathematics. How many are not good in

asked Jan 17, 2022 in 8th-maths

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Arif took a loan of Rs 80,000 from a bank. If the rate of interest is 10% per annum, find the difference in amounts he would be paying after `1 1/2` years if the interest is compounded

asked Jan 17, 2022 in 8th-maths

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Subtract `5x^2 – 4y^2 + 6y – 3` from `7x^2 – 4xy + 8y^2 + 5x –

asked Jan 17, 2022 in 8th-maths

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Find the volume of each rectangular box with given length, breadth and height. . length breadth height (i) `2ax` `3by` `5cz` (ii) `m^2n` `n^2p` `p^2m` (iii) `2q` `4q^2` `8q^3`

asked Jan 17, 2022 in 8th-maths

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Complete the table of products. First monomial → Second monomial ↓ `2x` `-5y` `3x^2` `-4xy` `7x^2 y` `–9x^2 y^2` `2x ` `4x^2` . . . . . . . . . . . . . . . `–5y` . . . . . . `–15x^2 y` . . . . . . . . . `3x^2` . . . . . . . . . . . . . . . `– 4xy` . . . . . . . . . . . . .

asked Jan 17, 2022 in 8th-maths

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Simplify the expressions and evaluate them as directed: x (x – 3) + 2 for x = 1,

asked Jan 17, 2022 in 8th-maths

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Find the product. `x xx x^2 xx x^3 xx

asked Jan 17, 2022 in 8th-maths

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- Simplify `a (a^2 + a + 1) + 5` and find its value for (i) a = 0, (ii) a = 1 (iii) a = –

asked Jan 17, 2022 in 8th-maths

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Multiply the binomials. (2x + 5) and (4x – 3)

asked Jan 17, 2022 in 8th-maths

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Simplify. `(x + y)(2x + y) + (x + 2y)(x – y)`

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 `95 xx

asked Jan 17, 2022 in 8th-maths

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Use a suitable identity to get each of the following products. `(3a –1/2) (3a

asked Jan 17, 2022 in 8th-maths

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Find the following squares by using the identities. `(0.4p –

asked Jan 17, 2022 in 8th-maths

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Simplify. `(7m – 8n)^2 + (7m +

asked Jan 17, 2022 in 8th-maths

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Simplify. `(m^2 – n^2m)^2 +

asked Jan 17, 2022 in 8th-maths

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