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
Phantasy [73]
3 years ago
5

Factor 4x^2 + 12x + 5

4x - 5" alt="12x^{2} - 4x - 5" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
zheka24 [161]3 years ago
3 0

Answer:

(2x + 5)(2x + 1).

(6x - 5)(2x + 1).

Step-by-step explanation:

4x^2 + 12x + 5.

Use the 'ac' method:

a * c = 4 * 5 = 20  so we need 2 numbers whose product is 20 and whose sum is +12.:-  2 and 10 look good, so we write:

4x^2 + 2x + 10x + 5

Now we factor by grouping:-

= 2x(2x + 1) + 5(2x + 1)

= (2x + 5)(2x + 1)   (answer).

12x^2  - 4x  - 5

ac = 12*-5 = - 60  and  we need 2 numbers sum to -4 .  these numbers could be  -10 and + 6:

12x^2 + 6x - 10x - 5

= 6x(2x + 1) - 5(2x + 1)

= (6x - 5)(2x + 1) (answer).

You might be interested in
in a square garden plot (with an area of 400 sq ft)deer fencing priced at $1.50 per foot is to be installed around the plot. if
mina [271]

We have a square garden of 400 square foot.

The area of a square is:

A=x^2

where x: side length.

In this case:

\begin{gathered} A=400=x^2 \\ x=\sqrt[]{400}=20\text{ ft} \end{gathered}

The perimeter of the square is the sum of the lengths of the sides of the square. As they are all equal, we can write:

P=4x=4\cdot20=80\text{ ft}

The fencing is priced at $1.50 per foot. If we add the 7% sales tax to this price we get:

C=1.50\cdot(1+0.07)=1.50\cdot1.07=1.605\text{ \$/ft}

The fencing will be installed in all the perimeter (80 ft).

We can calculate the total cost by multiplying the sales price ($1.605 per foot) and the perimeter (80 ft):

F=C\cdot P=1.605\frac{\text{\$}}{\text{ft}}\cdot80\text{ ft}=\$128.40

Answer: the fencing will cost a total of $128.40

8 0
1 year ago
Pls help. I don't understand it.
STatiana [176]

Answer:

\leq

Step-by-step explanation:

No more than 13 people

5 0
3 years ago
YALL REALLY NEED TO
Allisa [31]

Answer:

Not similar

Step-by-step explanation:

In triangle MLN & WXY,

Right angles - > 1

There is nothing common in these 2 triangles other than (1)

Therefore,

Not similar

3 0
3 years ago
What is the solution to –2|2.2x – 3.3| = –6.6? x = –3 x = 3 x = –3 or x = 0 x = 0 or x = 3
Nonamiya [84]

x = 3

-2 | 2.2(3) -3.3 | = -6.6

-2 | 6.6 - 3.3 | = -6.6

-2 | 3.3 | = -6.6

-2 * 3.3 = -6.6

-6.6 = -6.6

6 0
3 years ago
Read 2 more answers
What is 258.42 rounded to the nearest whole number
kicyunya [14]

Answer:

258

Step-by-step explanation:

Check the tenth place. It is 4 which is < 5. So, ignore and write the whole number as it is

So, 258.42 = 258

4 0
3 years ago
Other questions:
  • Need help ASAP. WILL MARK BRAINLIEST.
    12·1 answer
  • Using Hooke's law, F spring=k delta x, find the distance a spring with an elastic constant of 4 N/cm will stretch if a 2 newton
    12·1 answer
  • Show work and explain with formulas if possible.
    13·2 answers
  • On a landscaper's plans for a garden, the scale is .5 in : 10 ft. On the plans, the main sidewalk is 3 1/2 in. long. What is the
    8·1 answer
  • Suppose _ . Compute the following:
    7·1 answer
  • What are the coefficients in the polynomial 5x2 + 2x - 4?
    14·2 answers
  • Draw the line passing through the point (3,-4) with a slope of 2/3
    9·1 answer
  • Im rly boorredddddddddd any one wanna talk?<br><br> female 14
    9·2 answers
  • If g(x) = 17, find x
    6·1 answer
  • PLS HELP ME ONLY GOT 5 MIN LEFT!!!! LOTS OF POINTS
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!