11x²-54x+63
(solve factorise)
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Step-by-step explanation:
Given that,
11 x^2 - 54x + 63
= 11x^2 - 33x - 21x + 63 (∵ 11×63 =693, -33 × -21 = 693, -33 -21 = -54 ) ( - × - = + )
= 11x ( x - 3 ) - 21 ( × - 3 )
= ( x - 3 ) ( 11x - 21 ) is the answer.
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