Question

factorise : (a-b+c)(a+b-c)​

Answer 1

Step-by-step explanation:

here

the answer is.

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

=> a^2+ab-ac+ab+b^2-bc+ac+bc-c^2

=> a^2+b^2-c^2+2ab

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Answer 2

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

using a²_b²

a² -(b+c)²

a² -(b²+c²+2bc)

a² _ b²_c² _2bc ...