Mathematics
Plies
2016-04-12 19:26:51
Parabolas 2x2-8x-15=0
ANSWERS
Barton399
2016-04-12 23:27:52

solving it for x:- this will not factor  so use the quadratic formula:- x = -(-8) +/ sqrt(64 - 4*2*-15)        ---------------------------------   =   (8 + sqrt 184) / 4  and (8 - sqrt 154 ) / 4                        2*2 =   5.39, -1.39

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