-3(3a^2-4)-(a^2-3a+5)+(4a-a^2),a=-3 Simplify evaluation

-3(3a^2-4)-(a^2-3a+5)+(4a-a^2),a=-3 Simplify evaluation

Solution-3 (3a ^ 2-4) - (a ^ 2-3a + 5) + (4a-a ^ 2)
=-9a²+12-a²+3a-5+4a-a²
=-11a²+7a+7
=-11×(-3)²+7(-3)+7
=-99-21+7
=-113