2x+10=x+8等于几.不要直接答案,错了.2x-10=x+8是这个.求

x=2x,求x等于几 (x-1)(x-2)(x-3)(x-4)=(x+5)(x+6)(x+7)求X等于几? -2x+3=-10+8x x等于 2的X次方=10,X等于几? 3^x=2^x,求x.5^(x-1)·10^3x=8^x求x (x+10)的立方=-27 求x等于几 5x=1+2,求X等于几 15-(7-5x)=2x+(11-3x)求x等于几 y*y*y*y+2x*x*x*x=4x*x*y 求x等于几,y等于几,写出所有选项! 1X?+2X?+3X?+4X?+5X?+6X?+7X?+8X?+9X?+10X?=1980求?是多少 x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少? 高数题求解答过程f(x)=x(x-1)(x+2)(x-3)(x+4).(x+100)求f'(1)要过程,答案我有是-10