Question

решите плиз,забыла как

Answer 1

D=49-48=1 X1=(-7+1)/6=-1 X2=(-7-1)/6=-4/3

Answer 2

3х^2+7х+4=0
Д=в^2-4ас=49-4*12=1
х=-7+1/6=-1
х=-7-1/6=-8/6=-1,3