Question

-4x³-8x+3=0

Answer 1

问：-4x³-8x+3=0

问：-4x²-8x+3=0解析

答：解：

答：-4x²-8x+3=0

答：等式两边同时乘以（一1）得

答：4x²十8x一3=0

答：△＝8＾2一4x4x（一3）

答：＝64十48

答：x＝（一b士√△）／2a

答：＝（一8土10.58）／2x4

答：X1＝0.32

答：X2＝-2.32