-(5除4)(x+1)平方+2=0 x等於几
问题描述:
-(5除4)(x+1)平方+2=0 x等於几
答
-(5/4)(x+1)²+2=0
-(5/4)(x+1)²=-2
(x+1)²=2÷(5/4)
(x+1)²=8/5
x+1=±√(8/5)
x+1=±(2√10)/5
x=±(2√10)/5-1