Question

plz see the pic and solve​

Answer 1

Answer:

4a²+5b³

Step-by-step explanation:

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Answer 2

Answer:

a/b + b/a = 1

a2 + b2 /ab = 1

a2+ b2 - ab = 0

Now ,

a3 + b3 = (a+b) (a2+b2 - ab)

a3+ b3 = ( a+b ) * 0 =0