What is the missing coefficient in the above expression? (3x2-4x+7)(-2x2+5x-9) = -6x4+23x3+______x2+71x-63

Guest Jan 6, 2015

#1**0 **

I dont think that is possible all the numbers I put in = to at least somewhere around 4000 while the answer has to at least be 1,078

NotTheBestMathMaster Jan 6, 2015