Question

find the product (2x-4) (x-9) (3x+2)

Answer 1

Hello users...
Solution:-
(2x-4)(x-9)(3x+2)
= (2x-4){x(3x+2) -9(3x+2)}
= (2x-4) { 3x² +2x -27x -18}
= (2x-4)(3x² -25x -18)
= {2x(3x² -25x -18) -4(3x² -25x -18)}
= {6x³ -50x² -36x -12x² +100x +72}
= (6x³ -61 x² + 64x +72)

Hence:-
(2x-4)(x-9)(3x+2) = (6x³ -61 x² + 64x +72)

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