1) using standard formula expand the following picture.
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Step-by-step explanation:
(a+b) ² = a² + b² +2ab
so, (2/5x + 5/6y)²
= (2/5x)² + (5/6y)² + 2×2/5 × 5/6 xy
= 4/25 x² + 25/36 y² + 2/3 xy
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Answer:
Please mark it brainliest if helpfull earlier image was not uploaded
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