(44210-X) ×[(44210-X)×5%]=15000 求X
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(44210-X)×[(44210-X)×5%]=15000求X(44210-X)×[(44210-X)×5%]=15000求X(44210-X)×[(44210-X)×5%]=15000求X(442
(44210-X) ×[(44210-X)×5%]=15000 求X
(44210-X) ×[(44210-X)×5%]=15000 求X
(44210-X) ×[(44210-X)×5%]=15000 求X
(44210-x)²=15000x100/5
(44210-x)²=300000
44210-x=±100根号30
x=44210±100根号30
x=±√30 · 100+44210