Упрости выражения

\(5a(x+6y)=\) [ \(5ax+6y\) | \(5ax+30ay\) | \(5x+30ay\) ];

\(3x(x+3-6y)=\) [ \(x+3y+18\) | \(3x^2+3x-6yc\) | \(3x^2+9x-18xy\) ];

\(9c(-3a-2b+2)=\) [ \(-27ac-18bc+18c\) | \(-9a-9b+18\) | \(-9ac-18bc+2c\) ].