因式分解(a-3)²+(a-3)
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因式分解(a-3)²+(a-3)
因式分解(a-3)²+(a-3)
因式分解(a-3)²+(a-3)
( a - 3 )" + ( a - 3 )
= ( a - 3 )( a - 3 + 1 )
= ( a - 3 )( a - 2 )
或者
= a" - 6a + 9 + a - 3
= a" - 5a + 6
= a" - 2a - 3a + 6
= a( a - 2 ) - 3( a - 2 )
= ( a - 2 )( a - 3 )
(a-3)²+(3-a)
=(a-3)²-(a-3)
=(a-3-1)(a-3)
=(a-4)(a-3)