Упростить: 3a(a-2)-(a-3)^2.

Question

\[3a(a - 2) - (a - 3)^{2} =\]

\[= 3a^{2} - 6a - a^{2} + 6a - 9 =\]

\[= 2a^{2} - 9.\]

Accepted Answer

\[3a(a - 2) - (a - 3)^{2} =\]

\[= 3a^{2} - 6a - a^{2} + 6a - 9 =\]

\[= 2a^{2} - 9.\]

Ответ: