If a+b=7 and ab=11 than find the value of a-b
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Answer: (a - b) =√5 or -√5
Step-by-step explanation:
a+b=7 & ab=11
Now (a+b)^2=49
or, (a-b)^2 +4ab=49
or, (a-b)^2 = 49 - 11×4 = 5
or, (a - b) =√5 or -√5
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