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

asked Dec 15, 2018 151k views

5 votes

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

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6 votes

Answer:

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

-2 +- root(14)/ 2

TheJuls answered Dec 17, 2018

8.7k points

7 votes

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

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

Gradient answered Dec 20, 2018

7.6k points

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