Question

Expand the question :-
(2x - y - z)^2

answer please​

Answer 1

Answer:

2x−y+z)2

⇒A2+B2+C2=A2+B2+C2+2AB+2BC+2CA

⇒(4x2+y2+z2−4xz−2yz+4xz) 

Answer 2

Using Identity (a-b-c)²= a²+b²+c²-2ab+2bc-2ca

(2x-y+z)²= 4x² + y² + z² - 4xy +2yz -4xz

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