Question

if a+b =8 and ab=15 find the value of (a²+b²)​

Answer 1

Answer:

a + b = 8, ab = 15

(a + b)² = (8)²

a² + b² + 2ab = 64

a² + b² + 2(15) = 64

a² + b² + 30 = 64

a² - b² = 64 - 30

a² - b² = 34

Answer 2

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