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(1)x³-2x=(2)5x²-10x-5=(3)x²-16y²=(4)(a+b)²-1=(5)x²-2xy+y²-16=(6)(a+b)²-2(a+b)c+c²=(7)x²-3xy+2y²=(8)2a+4+3ab+6b=(9)9-a
题目详情
(1)x ³ -2x= (2)5x ² -10x-5= (3)x ² -16y ² =
(4)(a+b)² -1= (5)x ² -2xy+y ² -16= (6)(a+b)² -2(a+b)c+c ²=
(7)x ² -3xy+2y ² = (8)2a+4+3ab+6b= (9)9-a ² -b ² -2ab=
(10)x的四次方+4y 的四次方=
(4)(a+b)² -1= (5)x ² -2xy+y ² -16= (6)(a+b)² -2(a+b)c+c ²=
(7)x ² -3xy+2y ² = (8)2a+4+3ab+6b= (9)9-a ² -b ² -2ab=
(10)x的四次方+4y 的四次方=
▼优质解答
答案和解析
(1)x(x-√2)(x+√2)
(2)5[(x-1-√2)(x-1+√2)]
(3)(x+4y)(x-4y)
(4)(a+b-1)(a+b+1)
(5)(x-y-4)(x-y+4)
(6)(a+b-c)^2
(7)(x-y)(x-2y)
(8)(a+2)(3b+2)
(9)(3-a-b)(3+a+b)
(10)(x^2+(4y)^2+4√2xy)(x^2+(4y)^2-4√2xy)
(2)5[(x-1-√2)(x-1+√2)]
(3)(x+4y)(x-4y)
(4)(a+b-1)(a+b+1)
(5)(x-y-4)(x-y+4)
(6)(a+b-c)^2
(7)(x-y)(x-2y)
(8)(a+2)(3b+2)
(9)(3-a-b)(3+a+b)
(10)(x^2+(4y)^2+4√2xy)(x^2+(4y)^2-4√2xy)
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