(√3²)-2×(√3/2)²-3/4(√2)²+1/4(2)²
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(√3)² - 2 × (√3/2)² - 3/4×(√2)² + 1/4(2)²
3 - 2 × 3/2 - 3/4 × 2 + 1/4 × 4
3 - 3 - 3/2 + 1
3- 3- 3 + 2/2
3 - 3 - 5/2
- 6 - 5/2
-12-5/2
-17/2
- 8.5
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