Questions by yogita

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Verify the following: `(a – b) (a – b) (a – b) = a^3 – 3a^2b + 3ab^2 –

asked Jan 18, 2022 in 8th-maths

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Verify the following: `(a^2 – b^2) (a^2 + b^2) + (b^2 – c^2) (b^2 + c^2) + (c^2 – a^2) + (c^2 + a^2) =

asked Jan 18, 2022 in 8th-maths

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Find the value of a, if `8a = 35^2 –

asked Jan 18, 2022 in 8th-maths

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Factorise `p^4 + q^4 +

asked Jan 18, 2022 in 8th-maths

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`(2^-3)^2 xx (3^-2)^3`

asked Jan 18, 2022 in 8th-maths

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The value of `(–2)^(2xx3–1)`

asked Jan 18, 2022 in 8th-maths

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`((-7)/5)^(-1)` is equal

asked Jan 18, 2022 in 8th-maths

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For a non-zero rational number z, `(z^-2)^3` is equal

asked Jan 18, 2022 in 8th-maths

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

asked Jan 18, 2022 in 8th-maths

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The multiplicative inverse of `(– 4)^(–2) is

asked Jan 18, 2022 in 8th-maths

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`329.25 = 3 xx 10^2 + 2 xx 10^1 + 9 xx 10^0 + 2 xx 10^–1 + 5 xx

asked Jan 18, 2022 in 8th-maths

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Express `16/18` and `(-16)/18` as powers of a rational

asked Jan 18, 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 18, 2022 in 8th-maths

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If `53^(x–1) -: 25 = 125`, find the value of

asked Jan 18, 2022 in 8th-maths

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

asked Jan 18, 2022 in 8th-maths

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

asked Jan 18, 2022 in 8th-maths

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If `(5^m xx 5^3 xx 5^(-2))/5^-5 = 5^12`, find

asked Jan 18, 2022 in 8th-maths

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One Fermi is equal to `10^(–15)` metre. The radius of a proton is 1.3 Fermis. Write the radius of a proton in metres in standard

asked Jan 18, 2022 in 8th-maths

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Use the properties of exponents to verify that each statement is true. (a) `1/4(2^n) = 2^(n-2)` (b) `4(n-1) = 1/4(4)^n` (c) `25(5^(n–2)) =

asked Jan 18, 2022 in 8th-maths

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The given table shows the crop production of a State in the year 2008 and 2009. Observe the table given below and answer the given questions. Crop 2008 Harvest (Hectare) Increase/Decrease (Hectare) in 2009 Bajra `1.4 × 10^3` – 100 Jowar `1.7 × 10^6` -440,000 Rice `3.7 × 10^3` – 100 Wheat `5.1 × 10^5` + 190,000 (a) For which crop(s) did the production decrease? (b) Write the production of all the crops in 2009 in their standard form. (c) Assuming the same

asked Jan 18, 2022 in 8th-maths

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