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30 April, 18:19

The product of a + 3 and - 2a2 + 15a + 6 is - 2a3 + xa2 + 51a + 18. What is the value of x

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  1. 30 April, 19:48
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    I'm gonna go with x = 9. I don't know if that's remotely close though because there is no answer choice.
  2. 30 April, 21:34
    0
    Value of x is 9 As when we multiply a + 3 by - 2a2 + 15a + 6 We get (a + 3) (-2a2 + 15a + 6) - 2a3 + 15a2 + 6a - 6a2 + 45a + 18 - 2a3 + 9a2 + 51a + 18 If we compare the coefficients of a2, we get x = 9
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