.在先等.50分送上.1.2×(3+1)(3^2+1)(3^4+1)(3^8+1)+1=?2.函数 y = √2x+1 / 1-2x + (x-3)^-2 = 3.已知u = S1 - S2 / t -1 (u不等于0),则 t = 4.当 m = 时.方程 x /x-3 = 2 - m/ x-3 会产生增根.5.计算 (x+y) × x^2 / x^2 - y^2 + y^2 / y-x
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.在先等.50分送上.1.2×(3+1)(3^2+1)(3^4+1)(3^8+1)+1=?2.函数 y = √2x+1 / 1-2x + (x-3)^-2 = 3.已知u = S1 - S2 / t -1 (u不等于0),则 t = 4.当 m = 时.方程 x /x-3 = 2 - m/ x-3 会产生增根.5.计算 (x+y) × x^2 / x^2 - y^2 + y^2 / y-x
.在先等.50分送上.
1.2×(3+1)(3^2+1)(3^4+1)(3^8+1)+1=?
2.函数 y = √2x+1 / 1-2x + (x-3)^-2 =
3.已知u = S1 - S2 / t -1 (u不等于0),则 t =
4.当 m = 时.方程 x /x-3 = 2 - m/ x-3 会产生增根.
5.计算 (x+y) × x^2 / x^2 - y^2 + y^2 / y-x
6.已知 5x^2 - 3x -5 = 0 则 5x^2 - 2x - 1 / 5x^2 -2x -5 =
7.计算x^2 / (x-1)^2 - 2x / x-1 = 3
要有基本过程.讲明白点.50分送上..好的话追分.不让大家白忙活...
.在先等.50分送上.1.2×(3+1)(3^2+1)(3^4+1)(3^8+1)+1=?2.函数 y = √2x+1 / 1-2x + (x-3)^-2 = 3.已知u = S1 - S2 / t -1 (u不等于0),则 t = 4.当 m = 时.方程 x /x-3 = 2 - m/ x-3 会产生增根.5.计算 (x+y) × x^2 / x^2 - y^2 + y^2 / y-x
1.原式=(3-1)(3+1)(3^2+1)(3^4+1)(3^8+1)+1
=(3^2-1)(3^2+1)(3^4+1)(3^8+1)+1
=(3^4-1)(3^4+1)(3^8+1)+1
=3^16
2.根号到哪里为止?
3.请打括号.
4.-3
5.原式=(x+y) × x^2/(X+Y)(X-Y)+Y^2/Y-X
=X^2/(X-Y)-Y^2/(X-Y)
=X+Y
6.解一元二次方程可知:x=3+ -√(109)/10
原式=[2√(109)+6]/5或[2√(109)-6]/5
7.原式=x^2 /(x^2 -2X+1)-(2x^2-2X)/(x^2 -2X+1)
=-1+1/ (x-1)^2
=3
易知x-1=1/2或-1/2
x=3/2或1/2
1.18201
带根号的写得不清
给分给太少