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प्रश्न
Factorise: 16 - 9x2
योग
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उत्तर
16 – 9x2
= (4)2 – (3x)2
= (4 + 3x) (4 – 3x) ...[a2 – b2 = (a + b) (a – b)]
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Factorisation by Difference of Two Squares
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