Question

x-y+z whole square formula​

Answer 1

Answer:

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Answer 2

Answer:

(x-y-z)². = [x+(-y)+(-z)]². = x²+(- y)²+(-z)²+2x(-y)+2(-y)(-z)+2(-z)x. /* By algebraic identity: (a+b+c)²=a²+b²+c²+2ab+2bc+2ca */.