(6.4)²-(5.4)²/(8.9)²+8.9×2.2+(1.1)²
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Answer:
6.42-5.42 8.92+(8.9)(2.2)+1.1²
(6.4+5.4)(6.4-5.4) (8.9+1.1)2
(x + y)² = x² + y² + 2xy
11.8×1 100
=> 0.118
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