*(2a - 5b)² = ?* 1️⃣ 4a² - 10ab + 25
2️⃣ 4a² +10ab + 25
3️⃣ 4a² - 10ab - 25
4️⃣ 4a² + 10ab - 25
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*(2a - 5b)² = ?* 1️⃣ 4a² - 10ab + 25
2️⃣ 4a² +10ab + 25
3️⃣ 4a² - 10ab - 25
4️⃣ 4a² + 10ab - 25
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