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प्रश्न
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
9x2 – 1
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उत्तर
We have,
9x2 – 1 = (3x)2 – 12
= (3x – 1)(3x + 1)
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संबंधित प्रश्न
Expand: 102 x 98
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(6x + 7y)(6x – 7y)
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If X = a2 – 1 and Y = 1 – b2, then find X + Y and factorize the same
(a + b)(a – b) = a2 – b2
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Factorise the following using the identity a2 – b2 = (a + b)(a – b).
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(x4 – 16) ÷ x3 + 2x2 + 4x + 8
Verify the following:
(a + b + c)(a2 + b2 + c2 – ab – bc – ca) = a3 + b3 + c3 – 3abc
