Объяснение:
х²-5х-84=0
а=1 ; b= -5 ; c= -84
x1+x2= -b/a= -(-5)/1=5
x1•x2=c/a= -84/1= -84
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Объяснение:
х²-5х-84=0
а=1 ; b= -5 ; c= -84
x1+x2= -b/a= -(-5)/1=5
x1•x2=c/a= -84/1= -84