Question

If a+b+c=4, then a³+b³+c³-12c²+48c-64​

Answer 1

Answer:

a^3+b^3+c^3-12c^2+48c-64

=a^3+b^3-(c^3+12c^2-48c+64)

=a^3+b^3-(4-c)^3

=a^3+b^3-(a+b)^3

=-3ab(a+b)

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