a+b =7 and ab=12 what is a² +b²
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0
Answer:
25
Step-by-step explanation:
a² +b² =?
(a+b)²
a² +b² +2ab
7² = a²+b²+2ab
7 ²= a² +b² + 2(12)
a²+b² =49−24
a²+b² =25
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