Question

factorise 4x^4-5x^2+1​

Answer 1

Step-by-step explanation:

4x^4 -5x^2 +1

Let x ^2= a .

4a^2 -5a +1

4a^2 -4a-a+1

4a(a-1)-1(a-1)

(4a-1)(a-1)

(4x^2-1)(x^2-1) {a= x^2}

{(2x)^2-1}(x+1)(x-1)

(2x-1)(2x+1)(x+1)(x-1)

Answer 2

Answer:

(2x+1)(2x-1)(x+1)(x-1)