Mathematics · Algebraic Expressions
Simplify the given expression: (5z - 9y)2 + (9z + 5y)2 - 81z2
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 125z2 + 106y2✓
- 230z2 + 105y2
- 315z2 + 103y2
- 416z2 + 114y2
Correct answer
25z2 + 106y2
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