Answer:
Explanation:
a+b=7 and ab= 6 find a^2+b^2
( a + b )² = a² + b² + 2ab =
7² = a² + b² + 2 × 6 =
49 = a² + b² + 12 =
a² + b² = 49 - 12 =
a² + b² = 37
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