Mathematics · Algebra
Which of the following is the correct expansion for (x + y + z)2?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1(x + y)2 + z2
- 2x2 + y2 + z2 - 2xy - 2yz - 2zx
- 3x2 + y2 + z2 + xy + yz + zx
- 4x2 + y2 + z2 + 2xy + 2yz + 2zx✓
Correct answer
x2 + y2 + z2 + 2xy + 2yz + 2zx
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