49(x+y)^2-9(x-y)^2 因式分解

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49(x+y)^2-9(x-y)^2 因式分解
49(x+y)^2-9(x-y)^2 因式分解

49(x+y)^2-9(x-y)^2 因式分解
=［7(x+y)+3(x-y)］［7(x+y)-3(x-y)］
=（10x+4y）（4x+10y）

49(x+y)²-9(x-y)²
=[7(x+y)]²-[3(x-y)]²
=[7(x+y)+3(x-y)][7(x+y)-3(x-y)]
=(10x+4y)(4x+10y)
=4(5x+2y)(2x+5y)

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49(x+y)²-9(x-y)²
=[7(x+y)]²-[3(x-y)]²
=[7(x+y)+3(x-y)][7(x+y)-3(x-y)]
=(10x+4y)(4x+10y)
=4(5x+2y)(2x+5y)

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49(x + y)" - 9(x - y)"
= [7(x + y)]" - [3(x - y)]"
= [ (7x + 7y) + (3x - 3y) ] [ (7x + 7y) - (3x - 3y) ]
= (7x + 3x + 7y - 3y)(7x - 3x + 7y + 3y)
= (10x + 4y)(4x + 10y)
= [ 2 (5x + 2y) ] [ 2 (2x + 5y) ]
= 4(5x + 2y)(2x + 5y)

因分:1)4(x+y)平方-12(x+y)+9 2)x的平方+2x(y-z)+(z-y)的平方 2x三次方-8x x的平方-6x+9 (x-y)x(X+y) 前三分解因事 x-2分之一=x分之三这题是解方程.2x三次方-8x.x的平方-6x+9 .(x-y)x(X+y) 前三分解因事 x-2分之一=x分之三这题是解方程. x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 (1).(x-4)(x+1)+3x (2).(x+y)^2+12(x+y)+36 用多项式因分解化简y(x+y)+(x+y)(x-y)-x^2 x+y)^2-14(x+y)+49 6x^2-xy-2y^2-4x+5y-2因试分解分解因试..X平方-2XY-8Y平方-X-14Y-6 9(x-y)-12(y-x)^2 (x+y)^2+6(x+y)+9 (x+y)^2-9(x+y)+18 (x+y)(x-y)-(x-y)^2如题 (x+y)(x-y)-(x-y)^2 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) 因式分解x(x+y)(x-y)-x(x+y)^2 分解因试（x-1)²-2(x-1)+1 x³y-2x²y²+xy³ 9(x+y)^2-49(x-y)^2 49(x+y)^2-9(x-y)^2 因式分解 [(x-y)^2-(x+2y)(x-2y)]/y