因式分解x-1-1/4x^2
问题描述:
因式分解x-1-1/4x^2
答
解x-1-1/4x²=-( 1/4x²-x+1)=-(1/2x-1)²
答
x-1-1/4x^2
=-1/4 (x^2-4x+4)
=-1/4 (x-2)^2
答
x-1-1/4x^2
=-(1/4x^2-x+1)
==-(1/2x-1)^2
答
x-1-1/4x^2
=-(1/4x^2-x+1)
=-(1/2x-1)²