1.已知x+y=5,xy=2,则x^4 y^3+x^3 y^4 2.因式分解0.25X²-0.01y² 3.因式分解(a-b)²-c
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![1.已知x+y=5,xy=2,则x^4 y^3+x^3 y^4 2.因式分解0.25X²-0.01y² 3.因式分解(a-b)²-c](/uploads/image/z/4091177-65-7.jpg?t=1.%E5%B7%B2%E7%9F%A5x%2By%3D5%2Cxy%3D2%2C%E5%88%99x%5E4+y%5E3%2Bx%5E3+y%5E4+2.%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A30.25X%26sup2%3B-0.01y%26sup2%3B+3.%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%EF%BC%88a-b%EF%BC%89%26sup2%3B-c)
1.已知x+y=5,xy=2,则x^4 y^3+x^3 y^4 2.因式分解0.25X²-0.01y² 3.因式分解(a-b)²-c
1.已知x+y=5,xy=2,则x^4 y^3+x^3 y^4 2.因式分解0.25X²-0.01y² 3.因式分解(a-b)²-c
1.已知x+y=5,xy=2,则x^4 y^3+x^3 y^4 2.因式分解0.25X²-0.01y² 3.因式分解(a-b)²-c
①x^4y³+x³y^4
=x³y³(x+y)
=2³×5
=40
②0.25x²-0.01y²
=(0.5x)²-(0.1y)²
=(0.5x-0.1y)(0.5x+0.1y)
③(a-b)²-c²
=(a-b-c)(a-b+c)