Question

simplify combining like terms? - z² +13z²-5z+7z³-15z​

Answer 1

Answer:

$7z^{3$ + $12z^{2}$ - $20z$

Step-by-step explanation:

7$z^{3}$ + (13-1)$z^2$ + (-15-5)z

= $7z^{3$ + $12z^{2}$ - $20z$

Answer 2

- z² + 13z² - 5z + 7z³ - 15z

= 7z³ - z² + 13z² - 15z - 5z
= 7z³ + 12z² - 20z

Hope it helps you
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