8a+2b+(5a-b)① (2x-3y)-(5x+4y)② (8a-7b)-2(4a-5b)

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/18 17:02:12
8a+2b+(5a-b)①(2x-3y)-(5x+4y)②(8a-7b)-2(4a-5b)8a+2b+(5a-b)①(2x-3y)-(5x+4y)②(8a-7b)-2(4a-5b)8a+2b+(5a-

8a+2b+(5a-b)① (2x-3y)-(5x+4y)② (8a-7b)-2(4a-5b)
8a+2b+(5a-b)
① (2x-3y)-(5x+4y)
② (8a-7b)-2(4a-5b)

8a+2b+(5a-b)① (2x-3y)-(5x+4y)② (8a-7b)-2(4a-5b)
8a+2b+(5a-b)
=8a+2b+5a-b
=13a+b;
① (2x-3y)-(5x+4y)
=2x-3y-5x-4y
=-3x-7y;
② (8a-7b)-2(4a-5b)
=8a-7b-8a+10b
=3b;
很高兴为您解答,skyhunter002为您答疑解惑
如果本题有什么不明白可以追问,

8a+2b+(5a-b)① (2x-3y)-(5x+4y)② (8a-7b)-2(4a-5b) [3(x+ y)^3-5(x+ y)^2-2x-2y]÷(x 还有一道,[(a+b)^3-2(a+b)^2+(a+b)]÷(a+b) 把(a+b)和(x+y)各看成一项,对下列各式合并同类项:① 4(a+b)+2(a+b)-(a+b) ② 3(x+y)^2-7(x+y)+8(x+y)^2+6(x+y) 已知2A-B=x,2B-A=y,求3A+5B (a-b)(x+3)-(b-a)(y+2)+(a-b)(5-z) (1). (a+b)-(a+b)^2 (2).(y-x)^2-2(x-y) (3).2m(a-3)(1). (a+b)-(a+b)^2(2).(y-x)^2-2(x-y)(3).2m(a-3)+4(3-a)(4).4(y-x)^3-2(x-y)^2(5).(a+b)^2+2(b+a)(6).(a-b)^3-(b-a)^4 因式分解 ① x(b+c-d)-y(d-b-c)-z(c+b-d) ②(a-b)^2-2(a-b)(a+b)+(a+b)^2 ③4(5a-b)^2-9(2a+3b)^2 (x+y)(a-2b) 因式分解x(a-b)^2+y(b-a)^3 3x(a-b)+2y(b-a) 3x(a-b)-2y(b-a)分解因式 (1)(x+y)^2-(x+y)^3(2)(x-y)-(x-y)^3(3)(x-y)^2-(y-x)^3(4)2(x-y)-3(y-x)^2(5)4ab(a=b)^2-6a^2b(a+b)(6)(x+y)^2(x-y)+(x+y)(x-y)^2(7)2a(a-3)^2-6a^2(3-a)+8a(a-3)(8)24xy^2z^2(x+y-z)-32xyz(z-x-y)^2+8xy(z-x-y)(9)(a-b)(b-a)^n(b-a)^2n-1 [两解)(10)2^2=3,2^b 2x/x+y+2y/x+y a/a+b+b/a-b 1/3x²+2/4y-5/6xy解出来快 下列最简分式有哪些?①12b²c/4a ②5(x+y)²/y+x ③...下列最简分式有哪些?①12b²c/4a ②5(x+y)²/y+x ③a²+b²/3(a+b) ④4a²-b²/2a-b ⑤a-b/b-a 解方程:6(a-b)-7(a+b)=21① 2(a-b)-5(a+b)=-1②x+y/2+x-y/3=6①4(x+y)-5(x-y)=2②两题的啊6(a-b)-7(a+b)=21① {x+y/2+x-y/3=6①2(a-b)-5(a+b)=-1② {4(x+y)-5(x-y)=2② (x+y)^2+2x+2y,(a-b)^3-2b(b-a)^2. 计算:(1) (2x-3y)+(5x+4y) (2) (8a-7b)-(4a-5b) 八下 分式的基本性质通分(10a-b/-a²,a+b/3a:(2) 5/-4ab²,4/5a²b (3)x/a(x-y),y/b(y-x) (4)a/(y-x)²,b/(x-y)(x+y) 4.①3-2b,2a/b-a ②1/a+1,3/1-a,5/a²-1 ③a/a-b,b/a²-b²,c/a+b; ④a/a²-4,a-1/a-2,a+2/a&