If a+b=7 and ab=12 then find the value of a^2+b^2
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Step-by-step explanation:
Given,
a + b = 7
ab = 12
To find,
a^2 + b^2 = ?
solution,
=>(a + b)² = a² + b² + 2ab
=> (7) ² = a² + b² + 2(12)
=> 49 = a² + b² + 24
=> 49 - 24 = a² + b²
=> 25 = a² + b²
a² + b² = 25 Answer
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