(-3x)(5x^5)(-x^3)
To simplify this expression, we can multiply the coefficients together and multiply the variables together.
(-3)(5)(-1) * x^(1+5+3)
-15 * x^9
Therefore, the simplified expression is -15x^9.
(-3)(5)(-1) * x^(1+5+3)
-15 * x^9
Therefore, the simplified expression is -15x^9.