因式分解x-1-1/4x^2

问题描述:

因式分解x-1-1/4x^2

解x-1-1/4x²=-( 1/4x²-x+1)=-(1/2x-1)²

x-1-1/4x^2
=-1/4 (x^2-4x+4)
=-1/4 (x-2)^2

x-1-1/4x^2
=-(1/4x^2-x+1)
==-(1/2x-1)^2

x-1-1/4x^2
=-(1/4x^2-x+1)
=-(1/2x-1)²