\( \left(5 x^{2}\right)\left(-8 x^{3}\right) \)
First, multiply the coefficients (numbers): 5 * -8 = -40
Then, multiply the variables: \(x^{2} * x^{3} = x^{5}\) (when you multiply variables with the same base, you add the exponents)
So, \( \left(5
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