Question 818756
Solution:

{{{(4x^3a-7y^b)^2}}}
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{{{(4x^(3a))^2-2(7y^b)(4x^(3a))+(7y^b)^2}}}
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{{{(16x^(6a))-56y^(b)x^(3a)+(49y^(2b))}}}
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Answer: {{{16x^(6a)-56y^(b)x^(3a)+49y^(2b)}}}
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PS:
Filipino? :D