Question

Представляли за Т

Answer 1

4          3
----- + ------ = 1
 t         t-2

4*(t-2)+3t =1*t*(t-2)

4t-8+3t=t²-2t

t²-9t+8=0

D=81-32=49  √D=7

t₁ = (9+7)/2 = 8

t₂ = (9-7)/2 = 1



4x+7/x -8 =8

4x+7/x-16=0

4x²-16х+7=0

D=256-112=144 √D=12

x₁=(16+12)/8=28/8 = 7/2

x₂=(16-12)/8=4/8 = 1/2



4х+7/х-8=1

4x²-9x+7=0

D=81-56=25

x₃= (9+5)/8=14/8= 7/4

x₄=(9-5)/8=4/8=1/2

Ответ х=1/2