maths

for this quadratic equation:
y2-4y-16 = 0

which two options are correct solutions, rounded to three decimal places?

1) -4.483
2) -3.243
3)-2.472
4) -1.472
5) -0.536
6) 5.243
7) 6.472
8) 12.443

You have to use the quadratic equation, we will be happy to check your work.

the only solution that i get which equals to 0 is :

7) 6.472 is this correct??

i cant seem to find the other solution

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asked by angel

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