e) \( \left(4 x^{2} y^{3}\right)\left(-3 x y^{3}\right) \)
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The Deep Dive
To solve the expression \( \left(4 x^{2} y^{3}\right)\left(-3 x y^{3}\right) \), we multiply the coefficients and add the exponents of like bases. First, multiplying the coefficients: \( 4 \times -3 = -12 \). Next, for \( x \), we have \( x^{2} \times x = x^{2+1} = x^{3} \), and for \( y \), we get \( y^{3} \times y^{3} = y^{3+3} = y^{6} \). Putting it all together, we have: \[ \left(4 x^{2} y^{3}\right)\left(-3 x y^{3}\right) = -12 x^{3} y^{6} \] This expression highlights the beauty of algebraic manipulation, where organizing terms and applying the rules of exponents can yield a clean and simple result!