Factors of: x²+y²+z²+2xy–2yz–2zx are:
(x+y+z)²
(x+y–z)²
(x–y+z)²
None of these
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Answer:
2nd one
Step-by-step explanation:
You will get it only if the last coefficient is negative I hope you understand
Answered by
1
Step-by-step explanation:
hope this helps you and me
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