Question

Can someone solve this?

Answer 1

130z-3

Explanation:

Break down the equation:

(9
`z^(2)`-4)=

9z * 9z= 81z

You can't subtract 4, so I left it at (81z- 4)

(7
`z^(2)`+ 1)=

7z * 7z= 49z

You can't add 1, so I left it at (49z+ 1)

Then Solve:

You can add 81z and 49z.

81z+49z= 130z

-4+1= -3

Hope this helps!

Answer 2

47z²−25

Explanation:

3627272727822881818181