To multiply terms with the same base, multiply the coefficients and add the exponents. To divide terms with the same base, divide the coefficients and subtract the exponents. For example, 3x2 x 2x2 = 6x4 and \({8x^5 \over 4x^2} \) = 2x(5-2) = 2x3.
What is \( \frac{-9z^7}{3z^4} \)?
| -\(\frac{1}{3}\)z-3 | |
| -3z\(\frac{4}{7}\) | |
| -3z-3 | |
| -3z3 |