10 x^2 - x - 60 = 0 решите уравнение

Question

10 x^2 - x - 60 = 0 решите уравнение

Answer 1

D=1+2400=2401
x1= 2.5

x2= - 2.4

Answer 2

10x²-x-60=0
D=b²-4ac=(-1)²-4•10•(-60)=1+2400=2401
√D=49
x1=[-b+√D]/2a=[1+49]/20=2.5
x2=[-b-√D]/2a=[1-49]/20=-2.4