Преобразуйте в многочлен: 3*(x-5)^2+(10x-8x^2).

\[3 \cdot (x - 5)^{2} + \left( 10x - 8x^{2} \right) =\]

\[= 3 \cdot \left( x^{2} - 2 \cdot 5x + 25 \right) + 10x - 8x^{2} =\]

\[= 3x^{2} - 30x + 75 + 10x - 8x^{2} =\]

\[= - 5x^{2} - 20x + 75.\]