问题
填空题
若x>
|
答案
=x+
±1 2 1 2 4x+1
=2x+1± 4x+1 2 1 2
=4x+2±2 4x+1 1 2
=(
±1)24x+1
|1 2
±1|,4x+1
当x>
时,原式=1 4
(1 2
+1)-4x+1
(1 2
-1)=1.4x+1
若x>
|
=x+
±1 2 1 2 4x+1
=2x+1± 4x+1 2 1 2
=4x+2±2 4x+1 1 2
=(
±1)24x+1
|1 2
±1|,4x+1
当x>
时,原式=1 4
(1 2
+1)-4x+1
(1 2
-1)=1.4x+1