how to solve these sum give me answer that was very important for me
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You need to use the formula of factorisation of a^3 +b^3
a^3+b^3=( a+b)(a^2+ab+b^3)
a^3+b^3=( a+b)(a^2+ab+b^3)
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U have to apply an identity here which is (a³-b³ =(a-b)(a²+b²+ab)
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