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4 October, 16:40

Consider the equation y=2x²+9x+1.

When x=-1, what is the value of y?

Enter your answer as a number, like this: 42

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Answers (1)
  1. 4 October, 19:03
    0
    Sub - 1 for x

    remember pemdas

    so

    y=2 (-1) ²+9 (-1) + 1

    y=2 (1) - 9+1

    y=2-8

    y=-6

    the value of y is - 6 when x=-1
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