Maths

x+y=5
y=2x^2-x-13

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asked by Becky
  1. are we solving?

    if so, from the first ----> y = 5-x
    plug into the 2nd:

    2x^2 - x - 13 =5-x
    2x^2 = 18
    x^2 = 9
    x = ± 3
    then
    if x = 3, y = 2
    if x = -3 , y = 8

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    posted by Reiny

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