1.(x+2)(x+4)+12.(x^2-2x-2)(x^2-2x+4)+9

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1.(x+2)(x+4)+12.(x^2-2x-2)(x^2-2x+4)+9
1.(x+2)(x+4)+1
2.(x^2-2x-2)(x^2-2x+4)+9

1.(x+2)(x+4)+12.(x^2-2x-2)(x^2-2x+4)+9
设 x^2 - 2x = y
原式= (y-2)(y+4)+9
= y^2 + 2y - 8 + 9
= y^2 + 2y + 1
= (y+1)^2
= (x^2 - 2x + 1)^2
= (x-1)^4

300字读后感 2篇 俄把格式说一下吧:《xxxx》(写题目)主要内容:x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x(写那篇文章的主要内容)思考分析:x x x 1.(x+2)(x+4)+12.(x^2-2x-2)(x^2-2x+4)+9 解九宫格题目(X为未知数)9 X 2 X 7 X 8 X XX X 4 X X 9 X 6 X1 3 X 5 X X X X 24 X X 8 5 X X 1 XX 8 9 4 X 1 6 7 XX 1 X X 3 6 X X 88 X X X X 2 X 3 6X 5 X 6 X X 9 X XX X 7 X 4 X 2 X 1 1.(1/X-1 )-2=X^-3X/X^-12.(X/X+1)^+5(X/X+1)+6=03.(8(X^+2X)/X^-1)+ 3(X^-1)/X^+2x 3x/(x-2)-x/(x+2)÷2x/(x-4)化简3x/(x-2)-x/(x+2)÷2x/(x²-4)化简 1.(x^3-x^2-4x+1)/(x^2-3x+2)-(x^3-2x^2-9x+21)/(x^2-5x+6)+(x^2-3x+8)/(x^2-4x+3)2.{(x^2)/(x-y)}*{y/(x+y)}-{(x^4y)/(x^4-y^4)}÷{(x^2/x^2+y^2)^2} 1.x^2/(x-2)-x-22.(1+2/x-(x+1)/(x-2))/((x+4)/(x^2-2x))3.1/(1-x)+1/(1+x)+2/(1+x^2)+4/(1+x^4) 1.计算x/(2-x)-(4-x^2)/(x^2+4x+4 ) 因式分解(有理数范围内)1.x⁴-12.x²+4x-xy-2y+43.4x²-12x+54.21x²-31x-225.4x²+4xy+y²-4x-2y-36.9x^5-35x³-4x7.3x²-6x8.49x²-259.6x²-13x+510.x²+2-3x11.12x²-23x-2412.(x+6)(x-6)-(x-6)13. 1.x平方-1/x平方+4x+4 ÷(x+1)乘 x平方-4/x-12.x平方-4/x平方+4x+43.x+3分之2x-6 除以 x平方-9分之9-3x4.(x+y分之3a立方)的立方 ×(x平方-y平方)÷(x+y分之y-x)平方 (x^2-4x)/x^2-8x+16 X+X+2+X+4-(X+4)=26 (16x^4+4x^2+x)/x=? (x-4/x)× x/x-2 等于? (x-1)^3(x+1)(x-2)/(x+4) (x+2)(x-2)+16 (x-1)(x-2)+3x(x+3)-4(x+2)(x-3)(x+2)(x-2)+16 (x-1)(x-2)+3x(x+3)-4(x+2)(x-3) 计算:(x+2/x^2-2x-x-1/x^2-4x+4)×x/4-x 分式计算 (x+2/x-2+4/x平方-4x+4)÷x/x-2*x-2/x