Mathematics · Algebraic Identities
For evaluating the expression (202 - 192), which algebraic approach offers the fastest calculation method?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Expand each square fully
- 2Multiply directly
- 3Take the cube formula
- 4Use (a2 - b2) = (a - b)(a + b)✓
Correct answer
Use (a2 - b2) = (a - b)(a + b)
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