а)m^2-1,1m-0,6=0 ;
m1+m2=1,1; m1*m2=-0,6;
m1=1,5; m2= -0,4.
***
б) t^2+42,5t+100=0;
t1+t2=-42.5; t1*t2=100;
t1= -40; t2=-2,5.
в) -x^2+5x+24=0; [*(-1)]
x^2-5x-24=0;
x1+x2=5; x1*x2=-24;
x1=8; x2= -3.
г) 54y^2+69y+20=0. [: 54]
y^2+69/54y+20/54=0;
y1+y2=-69/54;
y1*y2=20/54;
y1= -0,444 y2= -0,833.
а)m^2-1,1m-0,6=0 ;
m1+m2=1,1; m1*m2=-0,6;
m1=1,5; m2= -0,4.
***
б) t^2+42,5t+100=0;
t1+t2=-42.5; t1*t2=100;
t1= -40; t2=-2,5.
***
в) -x^2+5x+24=0; [*(-1)]
x^2-5x-24=0;
x1+x2=5; x1*x2=-24;
x1=8; x2= -3.
***
г) 54y^2+69y+20=0. [: 54]
y^2+69/54y+20/54=0;
y1+y2=-69/54;
y1*y2=20/54;
y1= -0,444 y2= -0,833.