1. The problem is to simplify the algebraic expression: $$2IR_1 - I_1R + 2I_1R + IR_1$$.
2. We use the distributive property and combine like terms. Terms with $IR_1$ and terms with $I_1R$ are grouped separately.
3. Grouping terms:
$$2IR_1 + IR_1 - I_1R + 2I_1R$$
4. Combine like terms:
$$ (2IR_1 + IR_1) + (-I_1R + 2I_1R) = 3IR_1 + I_1R$$
5. The simplified expression is:
$$3IR_1 + I_1R$$
This matches the option "3IR₁ + I₁R" from the given choices.
Expression Simplification A85858
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