13. (x - y + z) ^ 2 + 2(x - y + z) * (y - z + x) + (y - z + x) ^ 2
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Answered by
1
Answer:
the answer for this question is x^4 + 3x -y + 7z
Answered by
1
Answer:
2(y2-Zx-xy)=R
So, L.H.S=R.H.S
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