Question

factorise b^2-c^2+2bc-a^2
please fast

Answer 1

Answer:

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

Step-by-step explanation:

Correct Question:

Factorise 2^b - c^2+2bc-a^2

Solution:

To Do:

Factorise 2^b - c^2+2bc-a^2

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Method:

b^2 - b^2 + 2bc - c^2  

=b^2 - [b^2 - 2bc +c^2]  

=b^2 - (b-a)(b-a)  

=b^2 - (b-a)^2  

=[b + (b - a)][a - (b - a)]  

=(b + b - a)(a - b + c)....................Answer

Identity used:

Using identity a²-b² =(a-b). (a+b)