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1 vote
If (a+b)=9 and ab=6 then find the value a²+b²

User Bart K
by
9.1k points

1 Answer

2 votes

Answer: 69

Step-by-step explanation: a + b = 9 and ab = 6

a² + b² = ?

Soo... Lets use the formula (a + b)²

(a + b)² = a² + b² + 2ab

9² = a² + b² + 2(6)

81 = a² + b² + 12

81 - 12 = a² + b²

69 = a² + b²

User Leke
by
7.7k points

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