求解 f(x)=9-x^2 | Microsoft Math Solver

跳到主要内容

因式分解

Tick mark Image

求值

Tick mark Image

图表

测验

来自 Web 搜索的类似问题

https://math.stackexchange.com/questions/1672660/find-the-coordinates-of-the-point-p-on-the-graph-of-fx-9-x2-at-which-th

https://socratic.org/questions/how-do-you-find-all-zeros-of-f-x-49-x-2

https://socratic.org/questions/how-do-you-use-riemann-sums-to-evaluate-the-area-under-the-curve-of-f-x-2-x-2-on

https://math.stackexchange.com/questions/135553/using-the-definition-of-a-concave-function-prove-that-fx-4-x2-is-concave-d

https://socratic.org/questions/how-do-you-find-the-slope-of-the-tangent-line-to-the-graph-of-the-function-f-x-5

共享

已复制到剪贴板

\left(3-x\right)\left(3+x\right)

将 9-x^{2} 改写为 3^{2}-x^{2}。可使用规则: a^{2}-b^{2}=\left(a-b\right)\left(a+b\right) 因式分解平方差。

\left(-x+3\right)\left(x+3\right)

重新排列各项的顺序。

示例

二次方程式