Answer:
[tex]15x - {x}^{2} =50 \\ {x }^{2} - 15x + 50 = 0 \\ {x}^{2} - 10x - 5x + 50 = 0 \\ x(x - 10) - 2(x - 10) = 0 \\ (x - 2)(x - 10) = 0 \\ x = 2 \: and \: x = 10 [/tex]
