{[ax-2(a+2)][a(x-1)+2]+2(-a^2+4)+3a^2x}/(-2ax),其中a=-1/21,x=-21,先化简在求值过程和答案
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/07 10:22:12
![{[ax-2(a+2)][a(x-1)+2]+2(-a^2+4)+3a^2x}/(-2ax),其中a=-1/21,x=-21,先化简在求值过程和答案](/uploads/image/z/10374672-48-2.jpg?t=%EF%BD%9B%5Bax-2%28a%2B2%29%5D%5Ba%28x-1%29%2B2%5D%2B2%28-a%5E2%2B4%29%2B3a%5E2x%7D%2F%28-2ax%29%2C%E5%85%B6%E4%B8%ADa%3D-1%2F21%2Cx%3D-21%2C%E5%85%88%E5%8C%96%E7%AE%80%E5%9C%A8%E6%B1%82%E5%80%BC%E8%BF%87%E7%A8%8B%E5%92%8C%E7%AD%94%E6%A1%88)
x){wvtbFfltFQnb15JyںɎF:@ikӞi5<Ʀ
{^o餞k<[aTO/lG[QA$Vj5OZbi65eCskjoW۶Z9QB7CPPV͆0Xund#4uF&bj+5Uch[`Wm.8<;P 14u
{[ax-2(a+2)][a(x-1)+2]+2(-a^2+4)+3a^2x}/(-2ax),其中a=-1/21,x=-21,先化简在求值过程和答案
{[ax-2(a+2)][a(x-1)+2]+2(-a^2+4)+3a^2x}/(-2ax),其中a=-1/21,x=-21,先化简在求值过程和答案
{[ax-2(a+2)][a(x-1)+2]+2(-a^2+4)+3a^2x}/(-2ax),其中a=-1/21,x=-21,先化简在求值过程和答案
∵a=-1/21,x=-21
∴ax=(-1/21)×(-21)=1
∴{[ax-2(a+2)][a(x-1)+2]+2(-a²+4)+3a^2x } ÷ (-2ax)
={ [ax-2a-4)][ax-a+2]+2(-a²+4) +3a*(ax) } ÷ (-2ax)
={ [1-2a-4)][1-a+2]+2(-a²+4)+3a×1 } ÷ (-2×1)
={ [-3-2a][3-a]+2(-a²+4)+3a } ÷ (-2)
={ -9-3a+2a²-2a²+8+3a } ÷ (-2)
={ -1 } ÷ (-2)
=1/2
x^2-ax-a-1
关于x不等式ax^2+ax+a
ax^2-a^2x-x+a怎样因式分解为(x-a)(ax-1),
因式分解:x^3-ax^2-2ax+a^2-1
把a+ax+ax^2+x^2-1因式分解
若A={x|ax^2-ax+1
关于x的不等式ax^2+ax+a-1
x^3+ax^2+ax+a-1因式分解谢谢了
若集合A={x丨ax^2-ax+1
2a(x+1)^2-2ax
ax^2-(a+1)x+1
ax^2-(a-1)x+1
ax^2-(a-1)x+1
解不等式ax^2-x+1-a
x²-2ax+a²-1
(a+1)/x+2ax+4
x^2-ax+1-4a
aX-a>X+1-2a 的解是X