Question 466687
4x^4-11x^2+6=0

a=4,b=-11 c=6

ac=24 

split b such that the sum of split  terms = -11 and product of the split terms = -24

-8 & -3 

-8*-3=24
-8+(-3)=-11

4x^4-8x^2-3x^2+6

4x^2(x^2-2)-3(x^2-6)
(x^2-2)(4x^2-3)