Question

3xy(2xy−y2)−2yz(yz−zx)+3yx(z−x)
solve this math please with explanation​

Answer 1

Literally no one in the real world would ever have to figure this out. See the solving steps in the picture attached.

Answer 2

the answer is 3x + 7x = (3 + 7)x = 10x -5xy + 9xy = ( -5 + 9)xy = 4xy

Explanation: