Mathematics
Whitney101
2016-04-17 13:01:51
Solve x^2 - x = 2 using the quadratic formula. Show your work.
ANSWERS
GarfieldNeehouse
2016-04-17 17:22:21

The quadratic formula is the result of completing the square for ax^2+bx+c=0 when a,b, and c are unknown values.  This result is: x=(-b±√(b^2-4ac))/(2a), we have x^2-x-2=0 so x=(1±√(1+8))/2 x=(1±√9)/2 x=(1±3)/2 x=-1 and 2

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