如题所述
第1个回答 2023-07-04
解：
x的平方+7000x+50000等于490000
x^2+7000x+50000=490000
x^2+7000x+50000-490000=0
x^2+7000x-440000=0
应用公式法求解可得：
x=[-7000±√(7000²+4*440000)]/2
x1=62.3026
x2=-7,062.3026本回答被网友采纳
x的平方+7000x+50000等于490000
x^2+7000x+50000=490000
x^2+7000x+50000-490000=0
x^2+7000x-440000=0
应用公式法求解可得：
x=[-7000±√(7000²+4*440000)]/2
x1=62.3026
x2=-7,062.3026本回答被网友采纳
第2个回答 2023-07-04
x^2+7000x+50000 = 490000
x^2+7000x-440000 = 0
x = -3500 ± 300√141
x^2+7000x-440000 = 0
x = -3500 ± 300√141
