Recent questions tagged chapter9

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Verify the following: `(ab + bc) (ab – bc) + (bc + ca) (bc – ca) + (ca + ab) (ca – ab) =

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

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

asked Jan 18, 2022 in 8th-maths by krutika (1.7k points)

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Verify the following: `(p – q) (p^2 + pq + q^2) = p^3 –

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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Verify the following: `(m + n) (m^2 – mn + n^2) = m^3 +

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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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 by purvi (1.8k points)

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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 by yogita (1.8k points)

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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 by yogita (1.8k points)

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Verify the following: `(5x + 8)^2 – 160x = (5x –

asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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Verify the following: `(7p – 13q)^2 + 364pq = (7p +

asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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Verify the following:

asked Jan 18, 2022 in 8th-maths by Arun (1.7k points)

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Find the value of a, if `8a = 35^2 –

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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Find the value of a, if `9a = 76^2 –

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

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

asked Jan 18, 2022 in 8th-maths by Arun (1.7k points)

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

asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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What should be added to `4c (– a + b + c)` to obtain `3a (a + b + c) – 2b(a – b +

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

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Subtract `b (b^2 + b – 7) + 5` from `3b^2 – 8` and find the value of expression obtained for `b = –

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

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

asked Jan 18, 2022 in 8th-maths by uday (1.6k points)

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Factorise

asked Jan 18, 2022 in 8th-maths by nishit (1.8k points)

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Factorise `p^4 + q^4 +

asked Jan 18, 2022 in 8th-maths by yogita (1.8k points)

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Find the value of (i) `(6.25 6.25 –1.75 1.75)/4.5` (ii) `(198 198 –102

asked Jan 18, 2022 in 8th-maths by nishit (1.8k points)

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