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
ad-work [718]
3 years ago
8

Solve for x. Write both solutions, separated by a comma. 8x^2-2x-15=0

English
2 answers:
Colt1911 [192]3 years ago
6 0

Answer:Factor by grouping.

Hello!

_________________

8x^2-2x-15=0

( 4x + 5 ) (2x - 3) = 0

Explanation:

If any individual factor on the left side of the equation is equal to 0 , the entire expression will be equal to 0.

Set 4x + 5 equal to 0  and solve for x.

4x + 5 = 0

Subtract 5 from both sides of the equation.

4x = -5

Divide each term by 4 and simplify.

4x/4 = -5/4

x = -5/4

Set 2x - 3  equal to 0 and solve for x.

x = 3/2

The final solution is all the values that make ( 4x + 5) ( 2x -3) = 0 true.

x = - 5/4 , 3/2.

Hope this helped you and sorry for take so long!

iVinArrow [24]3 years ago
4 0

Answer:

<em>x₁ = -5/4 (-1.25)</em>

<em>x₂ = 3/2 (1.5)</em>

Explanation:

8x² - 2x - 15 = 0

8x² + 10x - 12x - 15 = 0

2xx(4x + 5) - 12x - 15 = 0

2xx (4x + 5) - 3(4x + 5) = 0

(4x + 5) × (2x - 3) = 0

4x + 5 = 0 → x = -5/4 (-1.25)

2x - 3 = 0 → x = 3/2 (1.5)

Hope this helps! :)

You might be interested in
Nglish Language Arts 8 Sem 2
Lyrx [107]

Answer:

ggg

Explanation:

gg

8 0
3 years ago
True or False? Study-reading is a speed reading technique.
umka21 [38]
The answer to that statement is false.
6 0
3 years ago
Read 2 more answers
What is the mood of the story ? Be sure to support your answer with evidence from the text the lottery by shirley jackson
motikmotik
U should put a picture of the story
4 0
3 years ago
Read 2 more answers
How many Carbon atoms are in a molecule of CO2?<br><br> A.0<br> B.1<br> C.2
Yuki888 [10]

Answer:

1

Explanation:

plz make me brainliest

8 0
3 years ago
Saying your house is "neat as a pin," or that running a marathon is "a piece of cake" are examples of
Lelechka [254]
They are examples of b. idioms
4 0
3 years ago
Other questions:
  • Identify the relative pronoun used in this sentence.
    9·2 answers
  • PLEASE HELP ME! In the selection The Birds, how did the family at the farm (for whom Nat Hocken worked) fare?
    7·2 answers
  • Write an article for your class magazine.
    12·1 answer
  • Prior to replacing the condenser coil on a r410A system, the refrigerant was recovered as a vapor and stored in a refillable cyl
    10·1 answer
  • Write an example of an argument that suffers from the fallacy of an argument from the negative
    9·2 answers
  • Which speech method requires planning a pattern of ideas in your mind?
    15·1 answer
  • Use the story i took a photo of
    14·1 answer
  • WHO DO YOU HOPE WINS THE ELECTION? EXPLAIN WHY.
    10·1 answer
  • Is there a way to get on the tw.it.ch on school cumputers because...like i wanna go live lol
    6·1 answer
  • What kind of things do people write about in personal blogs? And in professional blogs?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!