因式分解:(a+b)^2-8(a^2-b^2)+16(a-b)^2
人气:245 ℃ 时间:2020-01-28 20:12:21
解答
( a + b )" - 8( a" - b" ) + 16( a - b )"= ( a + b )" - 8( a + b )( a - b ) + 16( a - b )"= ( a + b )" - 2( a + b )( 4a - 4b ) + ( 4a - 4b )"= [ ( a + b ) - ( 4a - 4b ) ]"= ( a + b - 4a + 4b )"= ( -3a ...
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