1.

Show that(a -b)(a +b) + (6 -c)(b + c) +(c -a)(c + a) = 0.T T/C​

Answer»

Step-by-step EXPLANATION:

(a-b)(a+b)+(b-c)(b+c)+(c-a)(c+a)

=(a^2) - (b^2) + (b^2) - (c^2) + (c^2) - (a^2)

=o



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