36(x+y)²-49(x-y)²怎么用公式法分解因式
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36(x+y)²-49(x-y)²怎么用公式法分解因式
36(x+y)²-49(x-y)²怎么用公式法分解因式
36(x+y)²-49(x-y)²怎么用公式法分解因式
36(x+y)²-49(x-y)²
=[6(x+y)+7(x-y)][6(x+y)-7(x-y)]
=[6x+6y+7x-7y][6x+6y-7x+7y]
=[13x-y][13y-x]
因式分解:36(x+y)²-49(x-y)²
36(x+y)²-49(x-y)²急用
36(x+y)²-49(x-y)²
49+14x+x²-y²
x²-y²-x-y因式分解
一:(x²+1)y²-x²-1二:-49x²+14x-1+y²
因式分解36(x-y)²-49(x+y)²
36(x+y)²-49(x-y)²怎么用公式法分解因式
x²-5x-y²-5y=0,x²+xy+y²=49
已知(x+y)²=1,(x-y)²=49,求x²+y²与xy的值.
因式分解-49x²+14x-1+y²
-49x²+14x-1+y²分解因式
分解因式x²+14x+49 (m+n)²-6(m+n)+9 -x²-4y²+4xy -2xy-x²-y² 3ax²(a+b)²-12(a+b)+36 (x+y)²-4(x+y-1) 1-m²-n²+2mn要过程 是作业 急啊!
[(x-y)²+(x+y)(x-y)]除以2x
(x+y)²-10(x+y)+25
(x+y)²-4(x+y-1)
因式分解2x(x-y)^4 - x²(x-y)² + xy(y-x)²RT
(x+y)²-2(x²-y²)+(y-x)²