Question

x = [ -b ± √(b2-4ac) ] / 2a
a = 5, b = 6, c = 1

Answer 1

x=-6+(6^2-4*5*1)
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2*5 Is this right?

Answer 2

yes, don't forget to square it

Answer 3

you will get a positive and negative answer

Answer 4

Thank you @Issy14

Answer 5

No problem