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प्रश्न
Factorise the following:
9x2 - 22xy + 8y2
योग
उत्तर
9x2 - 22xy + 8y2
= 9x2 - 18xy - 4xy + 8y2
= 9x(x - 2y) - 4y(x - 2y)
= (x - 2y)(9x - 4y).
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