The expression $5a^2+2a-5$ is a quadratic trinomial. To "solve" an expression typically means to simplify it or factor it. 1. Simplification: The terms $5a^2$, $2a$, and $-5$ are not like terms (they have different powers of $a$ or are constants), so they cannot be combined further. The expression is already in its simplest form. 2. Factoring: To factor a quadratic expression of the form $Ax^2+Bx+C$, we look for two numbers that multiply to $AC$ and add to $B$. For $5a^2+2a-5$: $A=5$, $B=2$, $C=-5$. $AC = (5)(-5) = -25$. We need two numbers that multiply to $-25$ and add to $2$. The pairs of integer factors for $-25$ are: • $(1, -25)$ sum is $-24$ • $(-1, 25)$ sum is $24$ • $(5, -5)$ sum is $0$ None of these pairs sum to $2$. Therefore, the expression cannot be factored over integers. Since the expression cannot be simplified or factored further over integers, it is already in its most basic form. The expression is already in its simplest form: $$5a^2+2a-5$$