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8 January, 15:34

What is x? (2x + 5) (x² + 5x+1)

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  1. 8 January, 15:39
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    (2x + 5) (x² + 5x+1)

    Step-by-step explanation:

    (2x+5) (x2+5x+1)

    = (2x+5) (x2+5x+1)

    = (2x) (x2) + (2x) (5x) + (2x) (1) + (5) (x2) + (5) (5x) + (5) (1)

    =2x3+10x2+2x+5x2+25x+5

    =2x3+15x2+27x+5
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