(1) (a+3)(a的平方-9)(a-3) (2) (-1\2)的-2次方+(π-3.14)的0次方+(-0.2)的2009次方*(-5)2010次方(3)a的三次方b-ab的三次方(4)(x的平方-1)的平方+6(x的平方-1)+9
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![(1) (a+3)(a的平方-9)(a-3) (2) (-1\2)的-2次方+(π-3.14)的0次方+(-0.2)的2009次方*(-5)2010次方(3)a的三次方b-ab的三次方(4)(x的平方-1)的平方+6(x的平方-1)+9](/uploads/image/z/220283-35-3.jpg?t=%281%29+%28a%2B3%29%28a%E7%9A%84%E5%B9%B3%E6%96%B9-9%29%EF%BC%88a-3%29+%282%29+%28-1%5C2%29%E7%9A%84-2%E6%AC%A1%E6%96%B9%2B%EF%BC%88%CF%80-3.14%EF%BC%89%E7%9A%840%E6%AC%A1%E6%96%B9%2B%EF%BC%88-0.2%EF%BC%89%E7%9A%842009%E6%AC%A1%E6%96%B9%2A%EF%BC%88-5%EF%BC%892010%E6%AC%A1%E6%96%B9%EF%BC%883%EF%BC%89a%E7%9A%84%E4%B8%89%E6%AC%A1%E6%96%B9b-ab%E7%9A%84%E4%B8%89%E6%AC%A1%E6%96%B9%EF%BC%884%EF%BC%89%EF%BC%88x%E7%9A%84%E5%B9%B3%E6%96%B9-1%EF%BC%89%E7%9A%84%E5%B9%B3%E6%96%B9%2B6%EF%BC%88x%E7%9A%84%E5%B9%B3%E6%96%B9-1%EF%BC%89%2B9)
(1) (a+3)(a的平方-9)(a-3) (2) (-1\2)的-2次方+(π-3.14)的0次方+(-0.2)的2009次方*(-5)2010次方(3)a的三次方b-ab的三次方(4)(x的平方-1)的平方+6(x的平方-1)+9
(1) (a+3)(a的平方-9)(a-3) (2) (-1\2)的-2次方+(π-3.14)的0次方+(-0.2)的2009次方*(-5)2010次方
(3)a的三次方b-ab的三次方
(4)(x的平方-1)的平方+6(x的平方-1)+9
(1) (a+3)(a的平方-9)(a-3) (2) (-1\2)的-2次方+(π-3.14)的0次方+(-0.2)的2009次方*(-5)2010次方(3)a的三次方b-ab的三次方(4)(x的平方-1)的平方+6(x的平方-1)+9
(1) (a+3)(a的平方-9)(a-3)
=(a+3)(a+3)(a-3)(a-3)
=(a+3)²(a-3)²
(2) (-1\2)的-2次方+(π-3.14)的0次方+(-0.2)的2009次方*(-5)2010次方
=2²+1+(-0.2×(-5))的2009次方×(-5)
=4+1+1的2009次方×(-5)
=5-5
=0
(3)a的三次方b-ab的三次方
=ab(a²-b²)
=ab(a+b)(a-b)
(4)(x的平方-1)的平方+6(x的平方-1)+9
=(x²-1+3)²
=(x²+2)²
(1)(a+3)(a²-9)(a-3)
=(a+3)²(a-3)².
(2)(-1/2)˜²+(π-3.14)º+(-0.2)^2009×(-5)^2009
=4+1+[(-0.2)×(-5)^2009
=4+1+1
=6.
(3)a³b-ab³
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(1)(a+3)(a²-9)(a-3)
=(a+3)²(a-3)².
(2)(-1/2)˜²+(π-3.14)º+(-0.2)^2009×(-5)^2009
=4+1+[(-0.2)×(-5)^2009
=4+1+1
=6.
(3)a³b-ab³
=ab(a²-b²)
=ab(a+b)(a-b).
(4)(x²-1)²+6(x²-1)+9
=(x²-1+3)²
=(x²+2)²。
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(1) (a+3)(a的平方-9)(a-3)
=(a+3)(a+3)(a-3)(a-3)
=(a+3)²(a-3)²
(2) (-1\2)的-2次方+(π-3.14)的0次方+(-0.2)的2009次方*(-5)2010次方
=2²+1+(-0.2×(-5))的2009次方×(-5)
=5-5
=0
(3)a...
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(1) (a+3)(a的平方-9)(a-3)
=(a+3)(a+3)(a-3)(a-3)
=(a+3)²(a-3)²
(2) (-1\2)的-2次方+(π-3.14)的0次方+(-0.2)的2009次方*(-5)2010次方
=2²+1+(-0.2×(-5))的2009次方×(-5)
=5-5
=0
(3)a的三次方b-ab的三次方
=ab(a²-b²)
=ab(a+b)(a-b)
(4)(x的平方-1)的平方+6(x的平方-1)+9
=(x²-1+3)²
=(x²+2)²
收起