expand (x+y-2)^2
please solve this problem
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Answered by
2
Answer:
The answer will be 2x+2y-4
Answered by
1
Step-by-step explanation:
(a+b-c)²
=a²+b²+c²+2(ab-ac-bc)
Replacing a with x, b with y, c with 2
(x+y-2)²
= x² + y² + (2)²+ 2(xy-2x-2y)
= x²+y²+4+2xy-4x-4y
= x²+y²-4x-4y+2xy+4
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