Mathematics · Algebra

Simplify: (5z - 9y)2 + (9z + 5y)2 - 81z2

Verified Solution4 OptionsUpdated: October 2026👁️1 View

132z2 + 104y2
220z2 + 97y2
325z2 + 106y2✓
417z2 + 98y2

Correct answer

25z2 + 106y2

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Simplify: (5z - 9y)2 + (9z + 5y)2 - 81z2

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Simplify: (5z - 9y)2 + (9z + 5y)2 - 81z2

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