24. If a-b= 12 and ab = 14, find a2 + ab + b2.
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Step-by-step explanation:
a - b = 12
Doing square both sides
a² - 2ab + b² = 144
a²+b²+ab-3ab = 144
a²+ab+b² -3(14) = 144
a² + ab + b² = 144 + 42 = 186
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