please help me solve this question
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Answer:
12a² + 12b² + 24ab - a + b - 35
Step-by-step explanation:
12(a+b)² - (a+b) - 35
= 12 (a² + 2ab + b²) - a + b - 35
= 12a² + 24ab + 12b² - a + b - 35
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