Mathematics

Question

Find the roots
2x 2 + 4x - 5 =0

2 Answer

  • Use the quadratic formula
    x = [-4 +- sqrt (16 - 4*2*-5)] / 4
    x1 = [-4 + sqrt (56)] / 4

    x2 = [-4 - sqrt (56)] / 4

  • Answer:

    Unfortunately, I cannot show the work because I got the answer from a friend, but he got

    -2 +- root(14)/ 2

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