(a+b)=15, ab= 7, find the value of a2+b2.
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Answer:
a²+b² = 211
Step-by-step explanation:
WKT (a+b) ² = a²+b²+2ab
(15)² = a²+b²+ 2 (7)
225 = a²+b²+ 14
225-14 = a²+b²
a²+b² = 211
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