最好有过程,只给答案也行.因数分解的题x²-4x-128x²+6xy-27y²2a²-b²+ab-bc+2ca(x²+2x)²-18(x²+2x)+45a^3-12527a^3+8b^3
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![最好有过程,只给答案也行.因数分解的题x²-4x-128x²+6xy-27y²2a²-b²+ab-bc+2ca(x²+2x)²-18(x²+2x)+45a^3-12527a^3+8b^3](/uploads/image/z/12197295-63-5.jpg?t=%E6%9C%80%E5%A5%BD%E6%9C%89%E8%BF%87%E7%A8%8B%2C%E5%8F%AA%E7%BB%99%E7%AD%94%E6%A1%88%E4%B9%9F%E8%A1%8C.%E5%9B%A0%E6%95%B0%E5%88%86%E8%A7%A3%E7%9A%84%E9%A2%98x%26%23178%3B-4x-128x%26%23178%3B%2B6xy-27y%26%23178%3B2a%26%23178%3B-b%26%23178%3B%2Bab-bc%2B2ca%EF%BC%88x%26%23178%3B%2B2x%EF%BC%89%26%23178%3B-18%EF%BC%88x%26%23178%3B%2B2x%EF%BC%89%2B45a%5E3-12527a%5E3%2B8b%5E3)
最好有过程,只给答案也行.因数分解的题x²-4x-128x²+6xy-27y²2a²-b²+ab-bc+2ca(x²+2x)²-18(x²+2x)+45a^3-12527a^3+8b^3
最好有过程,只给答案也行.
因数分解的题
x²-4x-12
8x²+6xy-27y²
2a²-b²+ab-bc+2ca
(x²+2x)²-18(x²+2x)+45
a^3-125
27a^3+8b^3
最好有过程,只给答案也行.因数分解的题x²-4x-128x²+6xy-27y²2a²-b²+ab-bc+2ca(x²+2x)²-18(x²+2x)+45a^3-12527a^3+8b^3
x²-4x-12=(x-6)(x+2)
8x²+6xy-27y²=(2x-3y)(4x+9y)
2a²-b²+ab-bc+2ca=(2a-b)(a+b+c)
(x²+2x)²-18(x²+2x)+45=(x-3)(x+5)(x+3)(x-1)
a^3-125=(a-5)(a^2+5a+25)
27a^3+8b^3=(3a+2b)(9a^2-6ab+4b^2)
希望能帮到你!
(x-6)(x+2) (2x-3y)(4x+9y)
多少年级的啊
x²-4x-12=(x+2)(x-6)
8x²+6xy-27y²=(2x-3y)(4x+9y)
2a²-b²+ab-bc+2ca=(a+b)(2a-b)+c(2a-b)=(2a-b)(a+b+c)
(x²+2x)²-18(x²+2x)+45=(x²+2x-3)(x²+2x-15)=(x-1)(x+3)(x-3)(x+5)
a^3-125=(a-5)(a²+5a+25)
27a^3+8b^3=(3a+2b)(9a²-6ab+4b²)
(x+2)*(x-6) (2x-3y)*(4x+9y) a(2a+b+2c)-b(b-a) 令t=x*x+2x 则(t-15)*(t-3)