Question

factorise
a²+b²-2ab-4c²​

Answer 1

Answer:

$\boxed { \bold \orange {(a-b+2c) (a-b-2c)}}$

Step-by-step explanation:

a²+b²-2ab-4c²

= (a-b)²-4c²

= (a-b)²-(2c)²

Now, this is in the form of x²-y²=(x+y)(x-y)

where, x= a-b and y=2c

Therefore,

= (a-b+2c) (a-b-2c).

Answer 2

Step-by-step explanation:

hope it helps you......