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25 June, 01:46

Simplify the following expression.

(3x - 5) (4 - 9x) + (2x + 1) (6x2 + 5)

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  1. 25 June, 01:57
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    Answer: 12x3-21x2+67x-15

    Step-by-step explanation:

    (3x-5) (4-9x) + (2x+1) (6x2+5)

    =12x+-27x2+-20+45x+12x3+10x+6x2+5

    =12x+-27x2+-20+45x+12x3+10x+6x2+5

    = (12x3) + (-27x2+6x2) + (12x+45x+10x) + (-20+5)

    =12x3+-21x2+67x+-15
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