把下列式子化为k(x-y)n的形式(要有过程) (1) 3(x-y)³×4(x-y)² (2) 27
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把下列式子化为k(x-y)n的形式(要有过程) (1) 3(x-y)³×4(x-y)² (2) 27(x-y)²{-2
(2) 27(x-y)²{-2 /9(y-x)^4}
还有两题是简便计算的
(3/2)^6×8^8
{(1/2)²}^6×(2^3)²
(2) 27(x-y)²{-2 /9(y-x)^4}
还有两题是简便计算的
(3/2)^6×8^8
{(1/2)²}^6×(2^3)²
![把下列式子化为k(x-y)n的形式(要有过程) (1) 3(x-y)³×4(x-y)² (2) 27](/uploads/image/z/19947727-55-7.jpg?t=%E6%8A%8A%E4%B8%8B%E5%88%97%E5%BC%8F%E5%AD%90%E5%8C%96%E4%B8%BAk%28x-y%29n%E7%9A%84%E5%BD%A2%E5%BC%8F%28%E8%A6%81%E6%9C%89%E8%BF%87%E7%A8%8B%EF%BC%89+%EF%BC%881%EF%BC%89+3%28x-y%29%26sup3%3B%C3%974%EF%BC%88x-y%EF%BC%89%26sup2%3B+%EF%BC%882%EF%BC%89+27)
3(x-y)³×4(x-y)²
=12(x-y)^5
再问: 后面滴捏?
再答: 27(x-y)²{-2 /9(y-x)^4} =-6(x-y)²(x-y)^4 =-6(x-y)^6 (3/2)^6×8^8 =3^6*8^8/2^6 =3^6*8^8/8^2 =3^6*8^(8-2) =3^6*8^6 =(3*8)^6 =24^6 {(1/2)²}^6×(2^3)² =(1/2)^12*2^6 =(1/2)^6*(1/2)^6*2^6 =(1/2)^6*(1/2*2)^6 =(1/2)^6*1 =(1/2)^6
=12(x-y)^5
再问: 后面滴捏?
再答: 27(x-y)²{-2 /9(y-x)^4} =-6(x-y)²(x-y)^4 =-6(x-y)^6 (3/2)^6×8^8 =3^6*8^8/2^6 =3^6*8^8/8^2 =3^6*8^(8-2) =3^6*8^6 =(3*8)^6 =24^6 {(1/2)²}^6×(2^3)² =(1/2)^12*2^6 =(1/2)^6*(1/2)^6*2^6 =(1/2)^6*(1/2*2)^6 =(1/2)^6*1 =(1/2)^6
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