-4+5a-3a squared

-3a²+5a-4

To simplify the expression -4+5a-3a^2, follow these steps:

Step 1: Rearrange the terms in descending order of the exponents:
-3a^2 + 5a - 4

Step 2: Combine like terms:
(Simplifying the coefficient of each term with the same variable)
-3a^2 + 5a - 4

Therefore, the simplified expression is -3a^2 + 5a - 4.