Question

factorise : 4x^2-4 root 7+7​

Answer 1

Answer:

(2x-√7)(2x-√7)

Step-by-step explanation:

4x²- 4√7x+7​

= (2x)²- 2(2x)(√7)+(√7))²

= (2x-√7)²              [ ∵  a²-2ab+b² = (a-b)² ]

ie., 4x²- 4√7x+7​ = (2x-√7)(2x-√7)