Question

Factorise by taking out the commmon factors : 1) ab(a²+b²-c²) - bc(c²-a²-b²) + ca(a²+b²-c²).​

Answer 1

Answer:

ab(a²+b²-c²) -bc(c²-a²-b²) +ca(a²+b²-c²)

ab(a²+b²-c²) +bc(-c²+a²+b²) +ca(a²+b²-c²)

ab(a²+b²-c²) +bc(a²+b²-c²) +ca(a²+b²-c²)

(a²+b²-c²)(ab+bc+ca)

Or,

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{a+(b-c)(b+c)} [ab +bc+ca]