Questions by nikhil

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Factorise the following, using the identity `a^2 – 2ab + b^2 = (a – b)^2`. `y^2 – 14y +

asked Jan 17, 2022 in 8th-maths

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Factorise the following, using the identity `a^2 – 2ab + b^2 = (a – b)^2`. `a^2y^2 – 2aby +

asked Jan 17, 2022 in 8th-maths

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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `4x^2 –

asked Jan 17, 2022 in 8th-maths

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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `28ay^2 –

asked Jan 17, 2022 in 8th-maths

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Factorise the following using the identity `a^2 – b^2 = (a + b) (a – b)`. `y^4 –

asked Jan 17, 2022 in 8th-maths

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `x^2 – 3x +

asked Jan 17, 2022 in 8th-maths

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The following expressions are the areas of rectangles. Find the possible lengths and breadths of these rectangles. `17ab^2c^3 -:

asked Jan 17, 2022 in 8th-maths

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The sum of (x + 5) observations is `x^4 – 625`. Find the mean of the

asked Jan 17, 2022 in 8th-maths

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The radius of a circle is 7ab – 7bc – 14ac. Find the circumference of the circle.

asked Jan 17, 2022 in 8th-maths

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

asked Jan 17, 2022 in 8th-maths

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Find the value of a, if `9a = 76^2 –

asked Jan 17, 2022 in 8th-maths

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Find x so that `(–5)^(x+1) xx (–5)^5 =

asked Jan 17, 2022 in 8th-maths

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`3^(–2)` can be written

asked Jan 17, 2022 in 8th-maths

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If x be any non-zero integer and m, n be negative integers, then `xm xx xn` is equal

asked Jan 17, 2022 in 8th-maths

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For a non-zero integer x, `(x^4)^(–3)` is equal

asked Jan 17, 2022 in 8th-maths

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

asked Jan 17, 2022 in 8th-maths

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The standard form of `(1/100000000)` is

asked Jan 17, 2022 in 8th-maths

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The value of `[1^(–2) + 2^(–2) + 3^(–2)] xx 6^2` is ________

asked Jan 17, 2022 in 8th-maths

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The multiplicative inverse of `(3/2)^2` is not equal to

asked Jan 17, 2022 in 8th-maths

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The value of `(1/4)^(-2)` is equal to

asked Jan 17, 2022 in 8th-maths

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