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
Gnom [1K]
3 years ago
8

Solve the equation x(3x-8)=28

Mathematics
2 answers:
kicyunya [14]3 years ago
4 0
<span>Simplifying x(3x + -8) = 28 Re-order the terms: x(-8 + 3x) = 28 (-8 * x + 3x * x) = 28 (-8x + 3x2) = 28 Solving -8x + 3x2 = 28 Solving for variable 'x'. Reorder the terms: -28 + -8x + 3x2 = 28 + -28 Combin like terms: 28 + -28 = 0 -28 + -8x + 3x2 = 0 Factor a trinomial. (-2 + -1x)(14 + -3x) = 0
Hope this helped :)</span>
zhuklara [117]3 years ago
3 0
First distibute ussing distributive property which is a(b+c)=ab+ac so x(3x-8)=28 3x^2-8x=28 subtract 28 from both sides 3x^2-8x-28=0 if you can factor it then you get xy=0 then x and/or y=0 so to factor multiply first term and last term together so 3 times -28=-84 now find what 2 numbers will multiply to get -84 and add to get -8 factors of -84 -2,41 -3,28 -4,21 -6,14 -7,12 now add them together and find which ones add to 8 or -8 -2,41=39 -3,28=25 -4,21=17 -6,14=8 -7,12=5 the numbers are -14 and 6 group 3x^2+6x-14x-28 group (3x^2+6x)+(-14x-28) reverse distribute which is ab+ac=a(b+c) (3x)(x+2)+(-14)(x+2) reverse distribute again (3x+(-14) times (x+2) (3x-14)(x+2)=0 set each to zero 3x-14=0 x+2=0 3x-14=0 add 14 to both sides 3x=14 divide boh tisdes by 3 x=14/3 x+2=0 subtract 2 from both sides x=-2 x=14/3 and -2
You might be interested in
14) A submarine is at a depth of 550 meters below sea
natta225 [31]
X=30 degrees for each of the congregant angles
3 0
2 years ago
The graph shows the relationship between the distance a truck can travel and the amount of gasoline used.
sp2606 [1]

Answer:

7 mpg

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Log (4x-1)+5=8<br><br> Please help me!
nordsb [41]

log (4x-1) + 5 = 8

log (4x-1) = 8 - 5

log (4x-1) = 3

4x - 1 = 10³

4x - 1 = 1000

4x = 1001

x = 1001/4

ok done. Thank to me :>

4 0
2 years ago
Which of the following best describes the change in the mean when 3 is included in the data set below? 34, 75, 26, 81, 65, 38, 4
kati45 [8]

Answer:

it increases

Step-by-step explanation:

5 0
3 years ago
20 points math question will give brainliest #3
Blizzard [7]

Answer:

-7.6\textrm{N}

Step-by-step explanation:

24\times\sin(37)-22=-7.6\textrm{N}

4 0
2 years ago
Other questions:
  • Can someone help me with this question?
    8·1 answer
  • How to find area of composite figures
    14·1 answer
  • 52÷2= ?? find the quotient and remainder
    9·2 answers
  • Reduce the fraction 36/48 to its lowest term
    11·1 answer
  • Anyone know the answer to to this algebra question?
    9·1 answer
  • WHAT WOULD THIS BE? HOW WOULD I DO IT PLEASE HELP IM STUCK
    13·1 answer
  • At the local pet store, zebra fish cost $2.10 each and neon tetras cost $1.85 each. If Marsha bought 13 fish
    8·1 answer
  • A company is having business cards printed. The cost to design the business card is
    10·1 answer
  • Simplify the following cube root: cube root( 54x^6)
    14·2 answers
  • Whats is the slope of (-5,-2) (8,13)
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!