Answers

2015-07-16T06:04:05+08:00
X=(-b+/-(√b²-4ac))over 2a
then
x=(-1+/-(√1²-4(1)(-1))over2(1)
x=(-1+/-(√1+4))over2
x=(-1+/-(√5))over2
the answer is x=(-1+√5)over2,x=(-1-√5)over2
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