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Factorise the following expressions. `3pqr –6p^2q^2r^2 –

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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Factorise the following, using the identity `a^2 + 2ab + b^2 = (a + b)^2` `x^2^ + 6x +

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `9x^2 – (3y +

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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Perform the following divisions: `(x^3y^3 + x^2y^3 – xy^4 + xy) -:

asked Jan 17, 2022 in 8th-maths by yogita (1.8k points)

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The sum of first n natural numbers is given by the expression `n^2/2+n/2`. Factorise this

asked Jan 17, 2022 in 8th-maths by uday (1.6k points)

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If p + q = 12 and pq = 22, then find `p^2 +

asked Jan 17, 2022 in 8th-maths by nishit (1.8k points)

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Find the value of a, if `9a = 76^2 –

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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Find the value of a, if `pq^2a = (4pq + 3q)^2 – (4pq –

asked Jan 17, 2022 in 8th-maths by krutika (1.7k points)

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If `x-1/x=7` then find the value of

asked Jan 17, 2022 in 8th-maths by nishit (1.8k points)

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Multiplicative inverse of `2^7`

asked Jan 17, 2022 in 8th-maths by nishit (1.8k points)

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`(–10) xx (–10) xx (–10) xx (–10) =

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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In `2^n`, n is known

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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The value of `(-2/3)^4` is equal

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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By solving `(6^0 – 7^0) xx (6^0 + 7^0)` we get

asked Jan 17, 2022 in 8th-maths by purvi (1.8k points)

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

asked Jan 17, 2022 in 8th-maths by Arun (1.7k points)

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The standard form for 0.000037 is `3.7 xx

asked Jan 17, 2022 in 8th-maths by Simran (1.8k points)

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Pluto is 59,1,30,00, 000 m from the sun. Express this in the standard

asked Jan 17, 2022 in 8th-maths by vaibhav (1.7k points)

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

asked Jan 17, 2022 in 8th-maths by krutika (1.7k points)

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`(125 xx x^(-3))/(5^(-3) xx 25 xx

asked Jan 17, 2022 in 8th-maths by nikhil (1.8k points)

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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 17, 2022 in 8th-maths by vaibhav (1.7k points)

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