(2000-x+240)×2-(x-160)=20
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(2000-x+240)×2-(x-160)=20
(2000-x+240)×2-(x-160)=20
(2000-x+240)×2-(x-160)=20
(2000-x+240)×2-(x-160)=20
(2240-x)×2-(x-160)=20
4480-2x-x+160=20
4640-3x=20
3x=4640-20=4620
x=4620÷3=1540
去括号 合并 移项 解之
(2000-x+240)×2-(x-160)=20
4000-2x+480-x+160-20=0
-3x=-4620
x=1540
4000-2x+480-x+160=20
4640-20=3x
x=4620/3
x=1540
4000-2X+480-X+160-20=0
3X=4620
X=1540
4000-2X+480-X+160=20
4640-3x=20
-3x=-4620
x=1540
4000-2x+480-x+160=20
-3x=-4620
x=1540
已知x方+4x-2=0,那么4x方+16x+2000=?
(x-2)(x+2)(x^4+4x^2+16)
(x-2)(x+2)(x^2+4)(x^4+16)
(x-2)(x^2+4)(x^4+16)(x+2)
x^2-8x+16分之x^2-4x
(x^2 + 4x)(x^2 + 4x+8)+16
(x^2-4x)/x^2-8x+16
(x^2-4x)(x^2-4x+8)+16
因式分解:(X+2)(X+4)(X+6)(X+8)+16
16x-x^3/x^2+x-20约分
16x^4-4x^2+x)/x=?
(16x^4+4x^2+x)/x=?
(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+/1x)(x^2+1/x^2)(x^4+1/x^4)(x^8+1/x^8)(x^16+1/x^16)(x^2-1)
(x+1/x)(x^2+1/x^2)(x^4+1/x^4)(x^8+1/x^8)(x^16+1/x^16)(x^2-1)
(x+x^-1)(x^2+x^-2)(x^4+x^-4)(x^8+x^-8)(x^16+x^-16)(x^2-1)=?
-16x^2+x+52
1/x(x+2)+1/(x+2)*(x+4)+1/(x+4)*(x+6)+.+1/(x+2000)*(x+2002)