Question

(4/5a+5/4b)^2 expand using identities
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Answer 1

Step-by-step explanation:

(4/5a)^2 + (5/4b)^2 + 2* 4/5a*5/4b

16/25 a^2 + 25/16 b^2 + 2ab

using identity (a+b)^2 = a^2 + b^2 + 2ab

Answer 2

Answer:

16/25a^2+2/ab+25/16b^2