Question

If x=2a2+3b2-5ab, y=b2-3a2+7ab and z=6a2 -b2 +ab, find
1.x+y-z 2.x-y+z

Answer 1

Answer:

1.x+y-z= -14a+10b+ab

2.x-y+z=22a-2b-11ab

Step-by-step explanation:

just multiply like 2a2=4a

then add and subtract