-5二次方-[(-2)三次方+(1-0.8*3⼀4)⼀(-2二次方)*(-2)]

2024-11-07 03:37:14
推荐回答(3个)
回答(1):

-5二次方-[(-2)三次方+(1-0.8*3/4)/(-2二次方)*(-2)]
=-25-[-8+(1-4/5*3/4)/4*2]
=-25-[-8+2/5/4*2]
=-25-[-8+1/5]
=-25-7又4/5
=-32又4/5(32.8)

回答(2):

等于23.8,祝你生活愉快,如果对你有帮助,请采纳

回答(3):

-5二次方-[(-2)三次方+(1-0.8*3/4)/(-2二次方)*(-2)]
= -25-[-8+(1-0.2*3)/4*(-2)]
=-25-[-8+0.4/4*(-2)]
= -25-[-8+0.1*(-2)]
= -25-(-8-0.2)
= -25+8.2
= -16.8