Question 74184: Solve by factoring -5x^2 + 22x - 8 =0
Answer by checkley75(3666)   (Show Source):
You can put this solution on YOUR website! -5X^2+22X-8=0
NOW YOU NEED TO FIND THE SUM OF THE PRODUCTS OF THEE FACTORS THAT=22.
THE FACTORS OF -5 ARE -1*5,1*-5
THE FACTORS OF -8 ARE -1*8,1*-8,-2*4,2*-4
THIS IS A TRIAL & ERROR PROCESS BUT YOU NEED A SUM OF PRODUCTS=22 SO START WITH 5*4.
5*4+-1*-2=20+2=22 THUS THE FACTORS ARE:
(5X-2)(-X+4)=0
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