8a³-b³
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8a³-b³
x²-2x-1
4(x-y+1)+y(y-2x)
a²-zab+b²-za+2b-3
4x²+4xy-y²
a³+1
x²-2x-1
4(x-y+1)+y(y-2x)
a²-zab+b²-za+2b-3
4x²+4xy-y²
a³+1
8a³-b³
=(2a)³-b³
=(2a-b)(4a²+2ab+b²)
x²-2x-1
=(x-1)²-2
=(x-1+√2)(x-1-√2)
4(x-y+1)+y(y-2x)
=4x-4y+4+y²-2xy
=(y²-4y+4)+4x-2xy
=(y-2)²+2x(2-y)
=(y-2)²-2x(y-2)
=(y-2)(y-2-2x)
=(y-2)(y-2x-2)
a²-zab+b²-za+2b-3 题抄错了 z应是2
a²-2ab+b²-2a+2b-3
=(a-b)²-2(a-b)-3
=(a-b+1)(a-b-3)
4x²+4xy-y²
=(4x²+4xy+y²)-2y²
=(2x+y)²-2y²
=(2x+y+√2y)(2x+y-√2y)
a³+1
=(a+1)(a²-a+1)
=(2a)³-b³
=(2a-b)(4a²+2ab+b²)
x²-2x-1
=(x-1)²-2
=(x-1+√2)(x-1-√2)
4(x-y+1)+y(y-2x)
=4x-4y+4+y²-2xy
=(y²-4y+4)+4x-2xy
=(y-2)²+2x(2-y)
=(y-2)²-2x(y-2)
=(y-2)(y-2-2x)
=(y-2)(y-2x-2)
a²-zab+b²-za+2b-3 题抄错了 z应是2
a²-2ab+b²-2a+2b-3
=(a-b)²-2(a-b)-3
=(a-b+1)(a-b-3)
4x²+4xy-y²
=(4x²+4xy+y²)-2y²
=(2x+y)²-2y²
=(2x+y+√2y)(2x+y-√2y)
a³+1
=(a+1)(a²-a+1)
(a-b)³(b-a)²[2(b-a)]³[(a-b)5次方]²/(a-b)8次
计算:(a-b)²(a-b)³(b-a)
计算:(a-b)(a-b)²(b-a)³
(b-a)(a-b)³(a-b)²等于多少
计算:(a-b)(b-a)²(a-b)³
[a+b]²-[a+b]³因式分解,
已知A=5a²b+2a四次方-3a²b-ab³,B=6ab³-8a³b
(a+b)²-3/2(a+b)-¼(a+b)²+(-2)³(a+b)
【(a+b)³-2(a+b)²-4(a+b)】÷(a+b)=?
(-2a²b)³+8(a²)²*(-a)²*-(-b)³,
因式分解 3ab(a-b)³+12a(b-a)
计算:(4ab³+6a³b-8a³b²)÷2ab-(a+b)(3a-2b)