x^4-5x^2+4 how do you simplify this
x^4-5x^2+4
x4−5x2+4=(x2−1)⋅(x2−4)=(x−1)⋅(x+1)⋅(x−2)⋅(x+2)
sorry i am greek i didn't mean simplify i meant to do this like this (dont know how its called in english)
p.e. 2x-2= 2(x-1)
thx