整式的乘法帮帮1(5x^2-7x+4)(7x-6) 2 (2x-1)(4x^2+2x+1) 3 (a+b-c)(a-b-
2个回答
35x^3-47x^2+70x-24
8x^3-1
a^2-b^2+c^2-2ac
4x^2+9y^2-z^2-12xy
x^4-81
2x^3+6xy^2
相关问题
计算.⑴﹙5x²-7x+4﹚﹙7x-6﹚.⑵﹙2x-1﹚﹙4x²+2x+1﹚.⑶﹙a+b-c﹚﹙a-
整式的乘法!(3m+2n-1)(3m-2n+1)(5x-7)(7x-5)(x-1)(x-2)-(x-3)(x+4)
1) 5a-2b+3b-4a-1 a= -1 b=2 (2)7x²-3x²-2x-2x²=
(1)2X+3)/(X-1)(X+2)=A/x-4+B/x+2,那A-B= (2)3X2-X=1,则6X3+7X2-5X
(1)已知A=5x 2 +4x﹣1,B=﹣x 2 ﹣3x+3,C=8﹣7x﹣6x 2 ,求A﹣B+C的值.
求值:①7x^2-3x^2-2x-2x^2+5+6x,其中x=-2②5a-2b+3b-4a-1,其中a=-1,b=2
已知A=x-2x-3,B=2x-5,C=1分之2x-7x+6,求A-(B-4C)的值大神们帮帮忙
若A=x^-2x-3,B=2x^-5,C=1/2x^-7x+6,求A-(B-4C)的值(^是平方)
若x=2a,求整式4(x-2a+1)^2+7(2b-a+2)的值
a=x2-2x2+x-4 b=2x3+5x-4 c=-4x2+x-1,2a-(b+c)=?