Question

a^2-b^2-4ac+4c^2 I want the answer immideately please

Answer 1

a^2 - b^2 - 4ac + 4c^2 
= (a + b)(a - b) - 4c(a - c) 

x^4 - 1 
(x^2 + 1) (x^2 - 1) 
= (x^2 + 1)(x + 1)(x - 1)
hope its help you