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
NeTakaya
2 years ago
14

Select the two values of x that are roots of this equation.

Mathematics
1 answer:
makkiz [27]2 years ago
5 0

Answer:

\implies x = (-2) \qquad or\qquad x = \dfrac{-3}{2}

Step-by-step explanation:

<u>Given </u><u>:</u><u>-</u><u> </u>

  • A quadratic equation is given to us.
  • The equation is 2x² + 7x +6=0

And we need to find out the roots of the given equation. We can use the middle term splitting method to find out the roots as ,

<u>Given </u><u>equation</u><u> </u><u>:</u><u>-</u>

\implies 2x^2 + 7x +6=0

Step 1: <u>Find</u><u> out</u><u> the</u><u> </u><u>factors</u><u> </u><u>of </u><u>1</u><u>2</u><u> </u><u>:</u><u>-</u><u> </u>

We will choose the two factors such that their sum equals to the coefficient of x i.e. 7 .The factors are , 1×12 , 2×6 , 3×4 .

  • And 3 + 4 = 7. So we will break the middle term into 3x and 4x .

Step 2 :<u> Breaking</u><u> the</u><u> </u><u>middle</u><u> term</u><u> </u><u>:</u><u>-</u><u> </u>

\implies 2x^2 + 3x+4x +6=0

Step 3: <u>Take </u><u>out </u><u>common</u><u> </u><u>from </u><u>terms </u><u>:</u><u>-</u>

\implies x(2x + 3) +2(2x +3)=0

\implies ( x +2)(2x+3)=0

Step 4 : <u>Equate </u><u>them </u><u>with </u><u>0</u><u> </u><u>:</u><u>-</u><u> </u>

\implies x = (-2) \qquad or\qquad x = \dfrac{-3}{2}

<u>Hence </u><u>the</u><u> </u><u>correct</u><u> </u><u>options </u><u>are </u><u>C </u><u>and </u><u>D </u><u>.</u>

You might be interested in
Instructions: Given the following image of two parallel lines cut by a transversal, find the value of x.​
Leya [2.2K]

Answer:

X=6

Step-by-step explanation:

10x-5=9x+1

x-5=1

x=6

8 0
2 years ago
Read 2 more answers
From a club of 24 people, in how many ways can a group of four members be selected to attend a conference?
Kamila [148]

Answer:

255,024

Step-by-step explanation:

24 x 23 x 22 x 21

24 options for the first member

23 options for the second member

22 options for the third member

21 options for the last member

6 0
3 years ago
A model length of 12 cm. represents an actual length of 102 ft.the model has a width of 48cm. What is the width of the actual ob
Elodia [21]

the answer would be 408


just set it up like this

12       48

----  =  ----

102      ?


12*4=48 so 102*4 = 408

8 0
3 years ago
Solve the equation : x^(2)+5=3(x^(2)-3)
Fittoniya [83]

Answer:

x = ± 2

Step-by-step explanation:

Given

x² + 5 = 3x² - 3 ( subtract x² + 5 from both sides )

0 = 2x² - 8 ( add 8 to both sides )

8 = 2x² ( divide both sides by 2 )

4 = x² ( take the square root of both sides )

x = ± \sqrt{4} = ± 2

6 0
3 years ago
A parallelogram has an area of 111.86 ft2 and a height of 11.9 ft. how long is the base of the parallelogram? enter your answer
777dan777 [17]
111.86/11.9 = 11186/1190 = 5593/595 = 9.4
7 0
3 years ago
Read 2 more answers
Other questions:
  • Find the hypotenuse length. <br> A. 108 in.<br> B. 110 in.<br> C. 117 in.<br> D. 14 in
    15·2 answers
  • Which expression is equivalent to 7(xy)<br><br> 7x+y<br><br> 7x-y<br><br> x(7y)<br><br> xy/7
    9·2 answers
  • Find the sample space for a committee of two chosen from Alice (A), Bill (B), Carol (C), and David (D).
    7·1 answer
  • In the diagram, lines AB , CD, and EF intersect at G
    7·1 answer
  • Please help me on this, thank you
    5·1 answer
  • Find the distance between the two points (-7,0) and (-9,-8)
    6·1 answer
  • Nora measured a community college and made a scale drawing. She used the scale 3 millimeters : 2 meters. If a building at the co
    14·1 answer
  • Can someone help please
    14·2 answers
  • If x varies inversely as y and x=15 when y=-4, find x when y=-6.*​
    14·1 answer
  • The table shows the heights of three different plants.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!