分解因式:(1)x^2-9y^2 (2)x^3-2x^2y+xy^2(3)2x(a-b)-(b-a) (4)x^2-4y^2-3x+6y

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分解因式:(1)x^2-9y^2(2)x^3-2x^2y+xy^2(3)2x(a-b)-(b-a)(4)x^2-4y^2-3x+6y分解因式:(1)x^2-9y^2(2)x^3-2x^2y+xy^2(

分解因式:(1)x^2-9y^2 (2)x^3-2x^2y+xy^2(3)2x(a-b)-(b-a) (4)x^2-4y^2-3x+6y
分解因式:(1)x^2-9y^2 (2)x^3-2x^2y+xy^2
(3)2x(a-b)-(b-a) (4)x^2-4y^2-3x+6y

分解因式:(1)x^2-9y^2 (2)x^3-2x^2y+xy^2(3)2x(a-b)-(b-a) (4)x^2-4y^2-3x+6y
:(1)x^2-9y^2
=x²-(3y)²
=(x+3y)(x-3y)
(2)x^3-2x^2y+xy^2
=x(x²-2xy+y²)
=x(x-y)²
(3)2x(a-b)-(b-a)
=2x(a-b)+(a-b)
=(a-b)(2x+1)
(4)x^2-4y^2-3x+6y
=(x+2y)(x-2y)-3(x-2y)
=(x-2y)(x+2y-3)

(1)(x 3y)(x-3y) (2)x(x-y)(x-y) (3)(2x 1)(a-b) (4)(x 2y-3)(x-2y)