因式分解：1)5(a-b)^2-a+b

来源：学生作业帮编辑：搜搜做题作业网作业帮分类：数学作业时间：2024/08/01 03:55:40

因式分解：1)5(a-b)^2-a+b
2)x^2+6y-3x-2x 3)a^2-4b^2-3ax-6bx 4)x^2-4y^2-z^2+4yz 5)a^2-4ab+4ab^2-ac+2bc 6)x^2-3xy-4y^2+2x-8y 7)4x^2+12xy+9y^2-6x-9y+2 8)a^2-2ab+b^2-3a+3b-4

5(a - b)” - a + b
= 5(a - b)” - (a - b)
= (a - b)( 5a - 5b - 1 )
再问：还有7题
再答： a” - 4b” - 3ax - 6bx
= ( a - 2b )( a + 2b ) - 3x( a + 2b )
= ( a + 2b )( a - 2b - 3x )

x” - 4y" - z" + 4yz
= x" - ( 4y" - 4yz + z" )
= x" - ( 2y - z )"
= ( x + 2y - z )( x - 2y + z )

x" - 3xy - 4y" + 2x - 8y
= x" - 4xy + xy - 4y" + 2x - 8y
= x( x - 4y ) + y( x - 4y ) + 2( x - 4y )
= ( x - 4y )( x + y + 2 )

4x” + 12xy + 9y” - 6x - 9y + 2
= ( 2x + 3y )" - 3( 2x + 3y ) + 2
= ( 2x + 3y )" - ( 2x + 3y ) - 2( 2x + 3y ) + 2
= ( 2x + 3y )( 2x + 3y - 1 ) - 2( 2x + 3y - 1 )
= ( 2x + 3y - 1 )( 2x + 3y - 2 )

a" - 2ab + b" - 3a + 3b - 4
= ( a - b )" - 3( a - b ) - 4
= ( a - b )" + ( a - b ) - 4( a - b ) - 4
= ( a - b )( a - b + 1 ) - 4( a - b + 1 )
= ( a - b + 1 )( a - b - 4 )

因式分解：1)5(a-b)^2-a+b 4a²-4a+1因式分解 2a²+5ab+2b²因式分解因式分解(a+b)(a+b-5)-36 因式分解(a-b)平方-5(b-a) 因式分解：a^+2a-b^-2b 因式分解(a-b)2-2(a-b) b-a+3(a-b)^2 因式分解因式分解4a(a-b)+b^2 (a+b)m^2-(b+a) 因式分解 m^2(a+b)-a-b因式分解因式分解2(a+b)-a-b 因式分解 a(1-b)^2-1+2b-b^2