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22 August, 19:06

Find the value of 7x^2+2x when x=3

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  1. 22 August, 19:24
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    69

    Step-by-step explanation:

    so x2 will give you 9 times 7 which is 63. add it to 2 times 3 which is 63 + 6 will give you 69.
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