2.6(4.1-X)=7.8
2.6(4.1-X)=7.8
4×2.6-5x=8.4 17.28-4x=5.6x 2(4x-3.5)=11 4.3x-x+1.5x=9.6 4到解方
f(x)=5x^5+2x^4+3.5x^3-2.6x^2+1.7x-0.8,用秦九韶法计算多项式当x=5时
若1+x+x*x+x*x*x=0,求x+x*x+x*x*x+.+x(2000次幂)
(x/x-1)+(5x-2)/x*x-x=1 求x(有图)
360-x=2.6x
7.8X-X=14.
X-35%X=7.8 X+160%X=39
7.8一X=4.5 9.1除以X=2.6
解方程 1.5x+3.1=2.8x+206 x+7.8=2(x+1.5) 8x+4500=11x
f(x)=x²+3x|x-2|
f(x)=-x^2+2x(x>0) 0(x=0) x^2-2x(x