Question

5x2+7x=0 ( решите с дискриминантом ) помогите пожалуйста

Answer 1

5х²+7х = 0

D = b²-4ac = 49-4×5×0 = √49 = 7

x1 = -b±√D/2a = -7+7/2×5 = 0

x2 = -7-7/10 = -14/10 = - 7/5 = - 1 2/5

Answer 2

5х²+7х=0  

D=b²-4ac

Д= 7²-4*5*0=49

x₁/х₂= -b±√D/2а

х₁=-7+7/2*5=0/10=0

х₂=-7-7/10=-14/10=-1,4