Срочноооо!!!Решите 5 и 6

5)\beginlgathered2x \times (9x - x ^2 ) = 0 \\ x \times (9 - x ^2 ) = 0 \\ x = 0 \\ 9 - x ^2 = 0 \\ x = 0 \\ x = - 3 \ x = 3 \\ x1 = - 3 \\ x2 = 0 \\ x3 = 3\endlgathered2x(9xx2)=0x(9x2)=0x=09x2=0x=0x=3 x=3x1=3x2=0x3=36)\beginlgathered(x + 3) \times (5 - x) = 0 \\ x + 3 = 0 \\ 5 - x = 0 \\ x = - 3 \\ x = 5 \\ x1 = - 3 \\ x2 = 5\endlgathered(x+3)(5x)=0x+3=05x=0x=3x=5x1=3x2=5

5. 18х=2х^3
поделим обе доли на х
18=2х^2
9=х^2
х=3