Question

factorise the expression a^2-b^2-c^2-2bc+a+b+c​

Answer 1

Answer:

answer is given for the given problem

Answer 2

Step-by-step explanation:

a²-b²+2bc-c² =a² - (b² -2bc +c²)

=a² - (b-c)²

=(a-(b-c))(a+(b-c)) [ using identity a²-b² =(a-b)(a+b) ]

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

hence.,a²-b²+2bc - c² = (a-b+c)(a+b-c)