Multiply the single term $t$ by each term of the polynomial $\left(7t-1\right)$
$7t\cdot t-t$
2
When multiplying two powers that have the same base ($t$), you can add the exponents
$7t^2-t$
Final answer to the problem
$7t^2-t$
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The simplification of algebraic expressions consists in rewriting a long and complex expression in an equivalent, but much simpler expression. This simplification can be accomplished through the combined use of arithmetic and algebra rules.