Question

i have a doubt in this pls solve it for me...
good morning!
write step by step answer!​

Answer 1

Step-by-step explanation:

(x+y-2z)²-x²-y²-3z²+4xy

x²+y²+4z²-x²-y²-3z²+4xy

x²-x²+y²-y²+4xy+4z²-3z²

4xy+ z²

HOPE THIS HELPS

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Answer 2

Answer:

Profile to dekho iska:)