if a-b =8 and a^2+b^2=74 find ab
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Step-by-step explanation:
a - b = 8
doing square both side
(a - b)² = 8²
a²+b²-2ab = 64
74 - 2ab = 64 (a² + b² = 74 is given )
2ab = 10
ab = 5
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your and is 5
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