Factorise- 21x2 - 2x - 1-21

21x^2 2x+ 1/21 = [ √(21)x]^2 2 ×√(21x)×√(1/21) + (√(1/21) )^2 = [√(21)x 1/√(21) ]^2 ...

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Factorisation Using Algebraic Identities

Factorise: 21...

Question

Factorise:

$21 x^{2} - 2 x + \frac{1}{21}$

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Solution

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21 x^{2} - 2 x + \frac{1}{21} = 0

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