Question

(7z²+4z-1) +(2z²-6z+2)​

Answer 1

Answer:

9z^2-2z+1

Step-by-step explanation:

You can only add and subtract numbers with the same terms, so in this problem you can only add numbers that both have z^2 or numbers that both have just z or no term so you would add 7z^2 and 2z^2 to get 9z^2, 4z and -6z to get -2z and -1 and 2 to get 1

Answer 2

Answer:

hey mate here is your answer

Step-by-step explanation:

First we will open brackets

7$z^2+4z-1+2z^2-6z+2$

$=7z^2+2z^2+4z-6z-1+2$

$=9z^2-2z+1$

hope it helps