1.

A²(b²-c²)+c²(a²-b²)+b²(c²-a²)=____a. 3a²b²c²b. a²b²c²c. 3d. O​

Answer»

ANSWER:

a²(b²-c²)+c²(a²-b²)+b²(c²-a²)

=a²b²-a²c²+c²a²-c²b²+b²c²-b²a²

=0



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