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27 August, 22:14

What is the solution to the following system of equations?

y = - x2 - 5x - 4

y = - x2 + 9x - 18

a. (-1, - 10)

b. (1, - 10)

c. (-1, 10)

d. (1, 10)

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Answers (1)
  1. 28 August, 01:13
    0
    Hello,

    y=-x²-5x-4

    y=-x²+9x-18

    ==>-x²-5x-4=-x²+9x-18

    ==>9x+5x=18-4

    ==>14x=14

    ==>x=1 = = >y=-1-5-4=-10 (y=-1+9-18=-10

    Answer B
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