To simplify the expression \((2s^3)(7s^3)\), follow these steps:
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Multiply the coefficients: Multiply \(2\) and \(7\): \[ 2 \times 7 = 14 \]
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Multiply the variable parts: Since both terms have \(s^3\), you add the exponents: \[ s^3 \times s^3 = s^{3+3} = s^6 \]
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Combine the results: Now, combine both the coefficient and the variable part: \[ 14s^6 \]
Thus, the simplified expression is: \[ \boxed{14s^6} \]