求解方程 (x-2500)[(2900-x)/50×4+8]=5000
问题描述:
求解方程 (x-2500)[(2900-x)/50×4+8]=5000
答
( x - 2500 )[ ( 2900 - x ) / 50X4 + 8 ] = 5000-( x - 2500 )( x - 2900 ) /200 + 8( x - 2500 ) = 5000-( x" - 2500x - 2900x + 2900X2500 ) /200 + 8x - 20000 = 5000-( x" - 5400x + 725 0000 ) /200 + 8x - 25...