求解 12-2(23) | Microsoft Math Solver

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12 - 2 (23)

= - 34

求值

- 34

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因式分解

- 34

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测验

12 - 2 (23)

来自 Web 搜索的类似问题

What is the slope of any line perpendicular to the line passing through

(- 8, 2)

(- 12, - 20)

https://socratic.org/questions/what-is-the-slope-of-any-line-perpendicular-to-the-line-passing-through-8-2-and-

- \frac{2}{1 1}

Explanation: The slope of the line passing through (-8,2)and (-12.-20)is

\frac{- 2 0 - 2}{- 1 2 + 8} = - \frac{2 2}{- 4} = \frac{1 1}{2}

(- 1, 2), (- 2, 4)

https://www.tiger-algebra.com/drill/(-1,2),(-2,4)/

Finding the distance, midpoint, slope, equation and the x y-intercepts of a line passing between the two points p1 (-1,2) and p2 (-2,4)The distance (d) between two points (x1,y1) and (x2,y2) is given ...

What is the distance between

(10, 15, - 2)

(12, - 2, 15)

https://socratic.org/questions/what-is-the-distance-between-10-15-2-and-12-2-15

582 \approx 24.12 to 2 dec. places

using the 3-dimensional form of the distance formula

• (x) d = (x_{2} - x_{1})^{2} + (y_{2} - y_{1})^{2} + (z_{2} - z_{1})^{2}

What is the distance between

(13, 23, - 10)

(- 3, 17, - 22)

https://socratic.org/questions/what-is-the-distance-between-13-23-10-and-3-17-22

See the entire solution process below: Explanation: The formula for calculating the distance between two points is:

d = ((x_{2}) - (x_{1}))^{2} + ((y_{2}) - (y_{1}))^{2} + ((z_{2}) - (z_{1}))^{2}

How do you find unit vector of

a = (1, 2, - 2)

in direction of

a

https://socratic.org/questions/how-do-you-find-unit-vector-of-a-1-2-2-in-direction-of-a

\frac{a}{∣ ∣ a ∣ ∣} = (\frac{1}{3}, \frac{2}{3}, - \frac{2}{3})

Explanation: Divide by the length of the vector

a

Sum of eigenvalues is eigenvalue in which case?

https://math.stackexchange.com/questions/2449933/sum-of-eigenvalues-is-eigenvalue-in-which-case

Eigenvalues are additive when the corresponding eigenvector is the same - that is, if

A v = λ_{1} v

B v = λ_{2} v

(A + B) v = A v + B v = λ_{1} v + λ_{2} v = (λ_{1} + λ_{2}) v

共享

已复制到剪贴板

12-46

将 2 与 23 相乘，得到 46。

-34

将 12 减去 46，得到 -34。

示例

二次方程式

x^{2} - 4 x - 5 = 0

4 sin θ cos θ = 2 sin θ

y = 3 x + 4

699 * 533

[2534] [2 - 1 0135]

{8 x + 2 y = 46 7 x + 3 y = 47

\frac{d}{d x} \frac{( 3 x ^{2} - 2 )}{( x - 5 )}

\int_{0}^{1} x e^{- x^{2}} d x

x \to - 3 lim \frac{x ^{2} - 9}{x ^{2} + 2 x - 3}