Which is a factor of 4x1212x328x72 X43x21 2x33x1 2x33x21 x33

Which is a factor of 4x^-1/2-12x^-3/2+8x^-7/2? X^4-3x^2+1 2x^3-3x+1 2x^3-3x^2+1 x^3-3x^2_2

given 4 x^-1/2 -12x^-3/2 + 8x^-7/2

in every term we have 4 x^-1/2 , so take this as common

4 x^-1/2 -12x^-3/2 + 8x^-7/2 = 4x^-1/2 [ 1 -3x^2 + 2x^7 ]

now we have to factor 2x^7 -3x^2 +1

after divison we get

2x^3 -3x^2+1 is factor