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21 June, 16:17

Y = 2x² - 5x

y = - 3x + 4

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Answers (1)
  1. 21 June, 16:21
    0
    x = 2,-1

    Step-by-step explanation:

    first substitute the buttom function into the top one

    y = 2x² - 5x

    y = - 3x + 4

    then

    -3x + 4 = 2x² - 5x

    add 3x and subtract - 4

    0 = 2x^2 + 3x - 5x - 4

    combine like terms

    0 = 2x^2 - 2x - 4

    now you have to find the zeros

    take out a 2 from the equation

    0 = 2 (x^2 - x - 2)

    simplify

    0 = 2 (x-2) (x+1)

    solve for x

    x-2=0 x = 2

    x+1 = 0 x = - 1

    therefore x = - 1,2
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