(1).x^2+5x+4/25 (2).16y^2-24y+9 (3).x^2+3/2x+9/1 (4).3x^4+6x

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(1).x^2+5x+4/25 (2).16y^2-24y+9 (3).x^2+3/2x+9/1 (4).3x^4+6x^3y^2+3x^2y^4多项式因式分解

题目全抄错了.
x^2+5x+25/4
=x²+2*5/2x+(5/2)²
=(x+5/2)²
16y^2-24y+9
=(4y)²-2*4y*3+3²
=(4y-3)²
x^2+2/3x+1/9
=x²+2*x*1/3+(1/3)²
=(x+1/3)²
3x^4+6x^3y^2+3x^2y^4
=3(x^4+2x^3y^2+x^2y^4)
=3[(x²)²+2*x²*xy²+(xy²)²]
=3(x²+xy²)²

y=(x-1)(x-2)(x-3)(x-4)(x-5)(x-6)(x-7)(x-8)(x-9)(x-10)的导数在x=1 若2x-3y+4=0则x（x*x-1)+x(5-x*x)-6y+7 9y=3x-(x-1),4(x+y)-(2x+4)=8y （x+2)(x+3) (x-4)(x+1) (y+4)(y-2) (y-5)(y-3) {3(x+y)-4(x-y)=4 {x+y/2 + x-y/6=1 |X-1|+|X-2|+|X-3|+|X-4|+|X-5|+|X-6|+|X-7|+|X-8|+|X-9|+|X-10| 求函数y=\x-1\+\x-2\+\x-3\+\x-4\+\x-5\+\x-6\+.+\x-10\的最小值已知x=1/3,y=-1/2,求代数式x-(x+y)+(x+2y)-(x+3y)+(x+4y)-(x+5y)+...-( x/x-y*y^2/x+y-x^3y2/x^4-y^4/x^2/x^2+y^2 帮因式分解谢谢,4(x+y)(x-y)^3-9(x+y)^3(x-y) 9x^2-x+1/16这两题, x^8-x^7y+x^6y^2-x^5y^3+x^4y^4-x^3y^5+x^2y^-xy^7+y^8 化简[(3x+4y)^2-(2x+y)(2x-y)+(-x+y)(5x-y)]除以-2y,其中x=-1,y=1