To simplify the expression \( 1258 \cdot 12 - 12 \), we first factor out the common term:
\[ 1258 \cdot 12 - 12 = 12(1258 - 1) = 12 \cdot 1257 \]
The root form of an expression typically refers to expressing it in a simplified manner, possibly under a square root, cube root, or similar radical expression. However, in this case, we are simply rewriting the expression.
If you are asking for the index of a root (like a square root or cube root) of the simplified expression, this isn't explicitly a form that contains a root. If you're looking for a specific index, please provide more details about if you want a component relating to square roots, cube roots, etc.
The expression \( 12 \cdot 1257 \) does not have an inherent index in this context unless further expressed within a radical context. Can you clarify if you're looking for something different?
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