If ab+ba=1, then a3 + b3 =
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Answer:
hope u understand
Step-by-step explanation:
a
b
+
a
b
=1
ab
a
2
+b
2
=1
a
2
+b
2
−ab=0
Now, a
3
+b
3
=(a+b)(a
2
+b
2
−ab)
a
3
+b
3
=(a+b)×0=0
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