(9-X)(-x-9)=__________1道填空题.等于白送!
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/19 03:58:56
![(9-X)(-x-9)=__________1道填空题.等于白送!](/uploads/image/z/3712341-21-1.jpg?t=%289-X%29%28-x-9%29%3D__________1%E9%81%93%E5%A1%AB%E7%A9%BA%E9%A2%98.%E7%AD%89%E4%BA%8E%E7%99%BD%E9%80%81%21)
x)ӰԍЭеԴ×.\|宗f=_dW{_64*$§UΆ\++t-m&ـ9@*4Ev6u46>gk>N5Ownn_u=Ov=jXD
$#t-muA$ buZDh[jit
(9-X)(-x-9)=__________1道填空题.等于白送!
(9-X)(-x-9)=__________
1道填空题.等于白送!
(9-X)(-x-9)=__________1道填空题.等于白送!
x^2-81
(9-x)(9-x)=81-18x+x2
x^2-81 (x^2就是x的2次方)
平方差公式啊……
x^2-81
(9-X)(X-9=-(X-9)(X-9)=-(X^2-18X+81)=18X-X^2-81
若式子5x-7与4x+9互为相反数,则x=________
当x=________时,分式x^2-9/(x+2)的值是0
9(x+2y)^2-25(x-2y)^2=【 】^2-【 】^2=________.
16(x-y)的平方-9(x+y)的平方=(______)*(________)
1.抛物线 y=x^2+4x+9的对称轴是 ________.
解1/3(12-X)+2X=12-X 900000-9=________×99999 (写出过程)1.900000-9=________×999992.解1/3(12-X)+2X=12-X
1.900000-9=________×99999 2.解1/3(12-X)+2X=12-X (写出过程)
若4x-5与3x-9互为相反数,则x=________.【要有解释】谢谢
已知方程1/5x+9/5y=5用含x用含x的代数式表示y,则y= ________.用用含y的代数式表示x,则x= ________.
(-2x)(________)=5x²+x
若代数式2x²+3x-1=2,则代数式6x²+9x-5=________说明原因会再加财富
如果x=4是方程ax²-6x+2=-9的一个解,则a=________
4x2+9y2=(2x+3y)2+_____.=(2x-3y)²+________
函数y=5x+b^2-9图像经过原点,则b=________谢谢
解方程-x-x=2的结果是x=__________.若-3x,4x,-5x的和为13,则x=________.-(-2)^4×5-丨-3^2-(-2)^4×(-1)^9丨=
(6x^3-4x^2)/(-2x^2)-2(x+1)=________ (6x^3-4x^2)/(-2x^2)-2(x+1)=________
分解因式:2x²-8x=________
为什么arctan(tanx)=x,x∈_______(R)________