1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
True [87]
3 years ago
14

The first three steps of completing the square to solve the quadratic equation x^2+4x-6=0 are shown below.

Mathematics
1 answer:
ad-work [718]3 years ago
5 0
Take the sqrt of both sides of <span>(x+2)^2=10:

x+2 = plus or minus sqrt(10)

Solve for x:  x = -2 plus or minus sqrt(10)

Evaluate x:  x = -2 + sqrt(10)  AND  x = -2 - sqrt(10)       (answers)

</span>
You might be interested in
Can people help me on this please I need it!!! It’s really important
Firdavs [7]

Answer:

62

Step-by-step explanation:

The total of a triangle is 180

so 78+48 is 118

180-118=62

5 0
2 years ago
PLZ HELP WILL NAME BRIANLIEST
Kamila [148]

Answer:

SORRY IF IM WRONG BUT I THINK ITS C

Step-by-step explanation:

PLEASE MARK BRAINLIEST REMOVE MY ANSWER IF WRONG!!!!!!!!

3 0
3 years ago
let a = (a1, a2) and b = (b1, b2) and c = (c1,c2) be three non zero vectors. if a1b2 - a2b1 is not equal to 0. then show three a
Ksenya-84 [330]

Consider the contrapositive of the statement you want to prove.

The contrapositive of the logical statement

<em>p</em> ⇒ <em>q</em>

is

¬<em>q</em> ⇒ ¬<em>p</em>

In this case, the contrapositive claims that

"If there are no scalars <em>α</em> and <em>β</em> such that <em>c</em> = <em>α</em><em>a</em> + <em>β</em><em>b</em>, then <em>a₁b₂</em> - <em>a₂b₁</em> = 0."

The first equation is captured by a system of linear equations,

\begin{cases}c_1 = \alpha a_1 + \beta b_1\\ c_2 = \alpha a_2 + \beta b_2\end{cases}

or in matrix form,

\begin{pmatrix}c_1\\c_2\end{pmatrix} = \begin{pmatrix}a_1&b_1\\a_2&b_2\end{pmatrix}\begin{pmatrix}\alpha\\\beta\end{pmatrix}

If this system has no solution, then the coefficient matrix on the right side must be singular and its determinant would be

\begin{vmatrix}a_1&b_1\\a_2&b_2\end{vmatrix} = a_1b_2-a_2b_1 = 0

and this is what we wanted to prove. QED

3 0
3 years ago
I need help with this pleaseee!
ololo11 [35]
Probably B

STEP BY STEP
7 0
3 years ago
Which equation has no solution?
kherson [118]
A because absolute values are always more than or equal to 0
7 0
3 years ago
Other questions:
  • H(x)= (x^2)+2 <br><br> A) (-3,-7)<br> B) wrong<br> C) (2,4)<br> D) (3,11)
    14·1 answer
  • Annie got in her car and started driving toward her grandmother's house. After driving for 45 minutes, Annie took a break for 1
    7·1 answer
  • Why is 1/3 greater than 1/6
    11·2 answers
  • What are the next three numbets in this pattern 11,22,12,23
    14·2 answers
  • Which of the following is not a tool for monitoring your finances?
    10·1 answer
  • Sally picked 815 flowers she wanted to put each flower in 4 pots how many more flowers does she pick so she won't gave any extra
    12·2 answers
  • How can the distributive property be used to multiply numbers
    15·1 answer
  • student tickets for a football game cost $2 each. adult tickets cost $4 each. ticket sales at last week's game totaled $2800. wr
    6·1 answer
  • A set of 3 consecutive odd intergers sum to 249 what is the greatest interger
    11·1 answer
  • Given: WX congruent yz <br> Prove: WYXZ
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!