ax-by=4 ax+by=2与2x+3y=4 4x-5y=6的解相同求a= b=?

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2(ax+by-ax)-(ax+by)^2-(by-ax)^2 其中a=-3 b=0.52(ax+by)(by-ax)-(ax+by)^2-(by-ax)^2 2(ax+by)*(by-ax)-(ax+by)²-(by-ax)²,其中a=-3,x=2分之1 实数a,b,x,满足ax+by=3,ax^2+by^2=7,ax^3+by^3=16,ax^4+by^4=42,ax^5+by^5=? 若a,b,x,y满足ax+by=3,ax^2+by^2=7,ax^3+by^3=16,ax^4+by^4=42,求ax^5+by^5的值 若a,b,x,y满足ax+by=3,ax^2+by^2=7,ax^3+by^3=16,ax^4+by^4=42,求ax^5+by^5的值 求代数式2(ax+by)(by-ax)-(ax+by)²-(ax-by)²的值,其中a=-4,a-x=-1. ax+bx=3,ax^2+by^2=7,ax^3+by^3=16,ax^4+by^4=42,求ax^5+bx^5. ax+bx=3,ax^2+by^2=7,ax^3+by^3=16,ax^4+by^4=42,求ax^5+bx^5. 如果方程组ax+by=4,3x-y=-2与x+2y=1,ax-by=-2有相同解,求a,b 如果方程组ax+by=4,3x-y=-2与x+2y=1,ax-by=-2有相同解,求a,b 方程组{2x-3y=-4,ax-by=4与方程组{4x-5y=-6,ax=by=2有相同的解,求a,b的值.ax+by=2 已知ax+by=7,ax^2+by^2=49,ax^3+by^3=133,ax^4+by^4=406.求:2001(x+y)+6xy-17/2(a+b)的值 :设ax+by=7,ax^2+by^2=49,ax^3+by^3=133,ax^4+by^4=406试求:1995(x+y)+6xy-(17/2)(a+b)的值 已知ax+by=7,ax^2+by^2=49,ax^3+by^3=133,ax^4+by^4=406,求2008(x+y)+2008xy+(a+b)/21的值 已知ax+by=7,ax^2+by^2=49,ax^3+by^3=133,ax^4+by^4=406.求:2008(x+y)+2008xy+(a+b)/21 已知ax+by=7ax^2+by^2=49ax^3+by^3=133ax^4+by^4=406试求1995(x+y)+6xy-17/2(a+b)的值过程要详细已知ax+by=7,ax^2+by^2=49,ax^3+by^3=133,ax^4+by^4=406 试求1995(x+y)+6xy-17/2(a+b)的值 已知ax+by=7 ax²+by²=49 ax³+by³=133 ax^4+by^4=406已知ax+by=7 ax²+by²=49 ax³+by³=133 ax^4+by^4=406(1)求a+b ,x+y,xy的值(2)请问ax^5+by^5的值是有理数吗?(2)请问ax^5+by^5的值是有理数吗? 若a,b,x,y满足ax+by=3,ax^2+by^2=7,ax^3+by^3,ax^4+by^4=42,求ax^5+by^5的值.将8a^2-2ab-3b^2化为两个多项式的平方差.Sorry``的确少了··ax^3+by^3=16