a-b = 3, ab = 10 find a²+b²
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Answer:
a²+b² = 29
Step-by-step explanation:
Given that
a-b = 3 and ab = 10
Squaring on both sides
(a-b)² = 3²
a²-2ab+b² = 9
a²-2(10)+b² = 9
a²-20+b² = 9
a²+b² = 9 + 20
a²+b² = 29
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