I really need help please yong ma ayos ​

I Really Need Help Please Yong Ma Ayos class=

Sagot :

1.

Sum: 5h-3

Difference: -x+9

2.

Sum: 18p²+8r+5

Difference: 4p²+8r-5

3.

Sum: 7x-15y+13z

Difference: x+3y-7z

4.

Sum: -w²

Difference: 14w³-5w²+2w or w(14w²-5w+2)

5.

Sum: 27mn³-6m²+8mn-n

Difference: 19mn³-8m²+8mn+n