(1)2x平方-x=1-2x
2x平方+x-1=0
(x-1/2)(x+1)=0
x=1/2 or x=-1
(2)由求根公式得x=(4+更号6)/5 or x=(4-更号6)/5
(3)原式=2倍根号12×4分之根号3*1/4倍根号2
=3倍根号2/8
(1)2x平方-x=1-2x
2x平方+x-1=0
(x-1/2)(x+1)=0
x=1/2 or x=-1
(2)由求根公式得x=(4+更号6)/5 or x=(4-更号6)/5
(3)原式=2倍根号12×4分之根号3*1/4倍根号2
=3倍根号2/8