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
ValentinkaMS [17]
3 years ago
5

Will give Brainliest (:

Mathematics
2 answers:
crimeas [40]3 years ago
6 0

After adding B^2 to both sides of the equation in step 4, the constant on the right side of the equation would be 112.  Sooooo, choice B. :)

olya-2409 [2.1K]3 years ago
5 0

Answer:


Step-by-step explanation:

2x^2+8x-12=0

with form

ax^2+bx+c=0


move c to the other side

2x^2+8x=12


x^2 is multiplied -> divide equation by 2

x^2+4x=6


complete square:

divide b=4 by 2

4*1/2=2


square 2

2^2=4


add 4 to both sides

x^2+4x=6

x^2+4x+4=6+4

x^2+4x+4=10


transform to polynom

(x+2)^2=10


this left side is option B multiplied by a factor of 16 and therefore equal:

(4x + 8)^2

(4*4)x^2+(4*2*8)x+8*8

16x^2+64x+64

x^2+4+4


bonus: calculate root

x+2=+/-sqrt(10)

x=-2+/-sqrt(10)


<h2 /><h2>so it is option B</h2>
  • <em>2x^2 + 8x - 12 = 0..divide by 2</em>
  • <em>x^2 + 4x - 6 = 0</em>
  • <em>x^2 + 4x = 6...add 4 to both sides of the equation</em>
  • <em>x^2 + 4x + 4 = 6 + 4</em>
  • <em>(x + 2)^2 = 10....<== ur constant is 10</em>
  • <em>x + 2 = (+-)sqrt 10</em>
  • <em>x = -2 (+ - ) sqrt 10</em>
  • <em></em>
  • <em>x = -2 + sqrt 10</em>
  • <em>x = -2 - sqrt 10</em>
  • <em></em>
  • <em></em>
  • <em></em>
You might be interested in
H(x)=4x+3 what is the coordinate pair for h (1) ?
marysya [2.9K]

Answer:

(1,7)

Step-by-step explanation:

SImply replace x by (1) in the expression to find the value of h:

h(1) = 4 (1) + 3 = 4 + 3 = 7

so for x = 1, h is 7 , which is written as: (1, 7)

8 0
3 years ago
Los gusanos de la harina son un alimento saludable para las aves silvestres. Adam compra un recipiente de 3.5 oz de gusanos de h
lora16 [44]
Can u convertt this to english plz.
4 0
3 years ago
Using the numbers 2, 3, 6, 8 write two powers that have the same value PLEASE HELP ME!!!
Neko [114]
O to the power of 2 i think
3 0
3 years ago
What is the value of 2x3+12-13
MaRussiya [10]

Answer:

5

Step-by-step explanation:

According to PEMDAS the answer is five.

2x3+12-13

6+12-13

18-13

5

8 0
3 years ago
HELPPP PLSSSS ITS ALMOST DUE IN 1 HOUR WILL GIVE BRAINLIEST THANKS AND 5 STARSSS
Inessa05 [86]
H=($13-$2.50)/3

hope it helps
6 0
3 years ago
Read 2 more answers
Other questions:
  • After eliminating radicals, what quadratic equation can you solve to find the potential solutions of sqrt 2x+3 - sqrt x+1 = 1
    12·2 answers
  • Which of the following is equal to the fraction below? (7/4)^ 11
    9·2 answers
  • What are some good electronics that I can buy on Amazon?
    13·1 answer
  • Explain what the equation 110d = 100d + 40 represents<br>in the context of the example problem.​
    5·1 answer
  • What is the value of 3 in 136,422
    11·2 answers
  • Help me with 1 2 and 3 please
    9·1 answer
  • Help me with question 1
    11·1 answer
  • Someone please help it’s dueee today!
    7·1 answer
  • Lashonda's penny bank is
    13·1 answer
  • Stacy's dining room is 6 yards wide and 6 yards long. Stacy wants to install a new wood floor. It will cost $7.09 per square yar
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!