if ab=a-b find a/b+b/a-ab
Answers
Answered by
1
Answer:
2
Step-by-step explanation:
a/b+b/a -ab=a^2+b^2-(a^2+b^2-2ab)/ab
=2ab/ab
=2
Answered by
1
Answer:
Step-by-step explanation:
(a/b)+(b/a)-ab
a^2+b^2/ab-ab--(1)
given
a^2b^2=a^2+b^2-2ab
a^2+b^2=(ab)^2+2ab
substitute in (1)
((ab)^2+2ab)/ab)-ab
=ab(ab+2)/ab-ab
=ab+2-ab
=2
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