x^4-23x^2+1分解因式,求详细步骤
x^4-23x^2+1分解因式,求详细步骤
x^4-23x^2+1
=x^4+2x²+1-25x²
=(x²+1)²-(5x)²
=(x²+5x+1)(x²-5x+1)
x^2-23x+1分解因式,求详细步骤
x²-23x+1=0
△=23²-4=525
x=(23±5√21)/2
x²-23x+1=(x-23/2+5√21/2)(x-23/2-5√21/2)
x^2-23x+1分解因式 求步骤
x^2-23x+1
=(x^2-23x+529/4)-525/4
=(x-23/2)^2-525/4
=(x-23/2+5√21/2)(X-23/2-5√21 /2)
分解因式:(x+1)(x-1)-4x+5。 详细步骤
(x+1)(x-1)-4x+5
=x^2-1-4x+5
=x^2-4x+4
=(x-2)^2
x^2-y^2+5x+3y+4分解因式,求详细步骤
=[x(3x+5y)+y(5x+3y)][x(3x+5y)-y(5x+3y)] =(3x^2+5xy+5xy=(3x^2+10xy+3y^2)(3x^2-3y^2)提取公因式3 =3(3x^2+10xy+3y^2
(x^2+1)^2-4x(x^2+1)+4x^2 分解因式,需要步骤。
=[(x²+1)-2x]²
=(x²-2x+1)²
=(x-1)^4
4-3x^2 x^3因式分解,要详细步骤
4-3x^2+ x^3
=x^3-2x^2-(x^2-2x)-(2x- 4)
=x^2(x-2)-x(x-2)-2(x-2)
=(x^2-x-2)(x-2)
=(x+1)(x-2)(x-2)
=(x+1)(x-2)^2
满意请采纳啊
3x^2+5xy-2y^2+x+9y-4分解因式怎么分?详细步骤
3x^2+5xy-2y^2+x+9y-4 =(x+2y)(3x-y)+x+9y-4 =(x+2y-1)(3x-y+4).