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प्रश्न
Factorise the following by grouping the terms:
x(x - 4)- x + 4
योग
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उत्तर
x(x - 4) - x + 4
= x(x - 4) - 1(x - 4)
= (x - 4)(x - 1).
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Factorisation by Grouping
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