5%X+(5000-X)15%=5000*12%
1x+2x+3x+4x+5x+6x+7x+8x+9x+10x+11x+12x+13x+14x+15x=550
(x+12)(x-2)+(x+7)(x+8)-(x+5)(x-10),其中x=2
(5X-15)-(2X+3)=X+12
(2x^-5x+2/6x^+13x+6)*(6x^-5x-6/6x^-17x+10)*(12x^+8x-15/2x^-x
已知x -2x=5,求代数式x四次方+3x³-12x² -31x-15
15x=23x-24 12+5x=3x-8 3(x-3)=9-(x+6)解 4+x=4x-17解
X/15 + X/12 + X/10 = 1365,求X,
x=4x=254 5x-x=180 3x+x=16 4x-2x=28 15x-11x=12.8 (12+12*1.5)x
x+x=x+15
11x+0.5=15x-0.7 5x+12=8x+3
用递归法求y=x-(x*x*x/3!)+(x*x*x*x*x/5!)-(x*x*x*x*x*x*x/7!)+.
请问这张图什么意思?x^5+3x^4+12x^3+6x^2+3x+15=0