Questions by Arun

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Take suitable number of cards given in the adjoining diagram [G`(x xx x)` representing `x^2`, R `(x xx 1)` representing x and Y `(1 xx 1)` representing 1] to factorise the following expressions, by arranging the cards in the form of rectangles: (i) `2x^2 + 6x + 4` (ii) `x^2 + 4x + 4`. Factorise `2x^2 + 6x + 4` by using the figure.

asked Jan 17, 2022 in 8th-maths

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The distance between earth and sun is 150 million kilometres which can be written in exponential form as

asked Jan 17, 2022 in 8th-maths

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The reciprocal of `(2/5)^-1`

asked Jan 17, 2022 in 8th-maths

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The value of `(–2)^(2xx3–1)`

asked Jan 17, 2022 in 8th-maths

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For a non-zero integer x, `x^7 -: x^12` is equal

asked Jan 17, 2022 in 8th-maths

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The usual form for `2.03 xx

asked Jan 17, 2022 in 8th-maths

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Find the value `[4^(–1) +3^(–1) +

asked Jan 17, 2022 in 8th-maths

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By multiplying `(5/3)^4` by ________ we get

asked Jan 17, 2022 in 8th-maths

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The expression for `3^5` with a negative exponent is

asked Jan 17, 2022 in 8th-maths

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`24.58 = 2 xx 10 + 4 xx 1 + 5 xx 10 + 8 xx

asked Jan 17, 2022 in 8th-maths

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The value of `5^(–2)` is equal to

asked Jan 17, 2022 in 8th-maths

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Simplify: -1. `(1/4)^(-2) + (1/2)^(-2) +

asked Jan 17, 2022 in 8th-maths

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Find the value of `x^(–3)` if `x = (100)^(1–4) -:

asked Jan 17, 2022 in 8th-maths

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By what number should `(–15)^(–1)` be divided so that quotient may be equal to `(–15)^(–1)`

asked Jan 17, 2022 in 8th-maths

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Write 39,00,00,000 in the standard

asked Jan 17, 2022 in 8th-maths

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Express `(1.5 xx 10^6)/(2.5 xx 10^(-6))` in the standard

asked Jan 17, 2022 in 8th-maths

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`(2^n xx 2^6)/2^(-13) =

asked Jan 17, 2022 in 8th-maths

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Predicting the ones digit, copy and complete this table and answer the questions that follow. (a) Describe patterns you see in the ones digits of the

asked Jan 17, 2022 in 8th-maths

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An inch is approximately equal to 0.02543 metres. Write this distance in standard

asked Jan 17, 2022 in 8th-maths

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Find three repeater machines that will do the same work as a `(xx64)` machine. Draw them, or describe them using

asked Jan 17, 2022 in 8th-maths

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