V ( 6 - 10X) = 5 + X
6 - 10X = 25 + 10X + X^2
.......................................
6 - 10X > 0
- 10X > - 6
X < 0.6 <br>.................................
X^2 + 10X + 10X + 25 - 6 = 0
X^2 + 20X + 19 = 0
D = 400 - 4*1*19 = 400 - 76 = 324
V D = 18
X1 = ( - 20 + 18 ) : 2 = ( - 1 )
X2 = ( - 38 ) : 2 = ( - 19 )
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- 19 - 1 - 0.6
Ответ ( - 1 ) и ( - 19 )