If a-b=6 and a^2+b^2=42 find the value off ab
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1
Answer:
3
Step-by-step explanation:
(a-b)²=a²+b²-2ab
(6)²=42-2ab
36=42-2ab
2ab=42-36
2ab=6
ab=6/2
ab=3
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Answer:
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