Question

111111111111111111111111111111111111111111

Answer 1

$\int\limits^3_0 {(3 x^{2} -6x)} \, dx =(3* \frac{ x^{3} }{3} -6* \frac{ x^{2} }{2} )| _{0} ^{3} =( x^{3}-3 x^{2} )| _{0} ^{3}= 3^{3}-3* 3^{2} - 0^{3} +$$+3* 0^{2} =0$