Algebra 1

$-31$
We start with the given expression: $b-(3a)^2$ We plug in the values for $a$ and $b$: $5-(3\times(-2))^2$ The order of operations states that first we perform operations inside grouping symbols, such as parentheses, brackets, and fraction bars. Then, we simplify powers. Then, we multiply and divide from left to right. We follow the order of operations to simplify. We start by multiplying inside the parentheses: $5-(-6)^2$ Next, we simplify powers: $5-36$ Finally, we subtract: $-31$