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
Brut [27]
3 years ago
7

4. See if you can find "like-terms" in the expression and

Mathematics
1 answer:
WITCHER [35]3 years ago
7 0

Answer:

After finding like terms and solving, we get \mathbf{3x^2+3x+16}

Step-by-step explanation:

We need to find like terms and simplify the expression 4- 2x + x^2 + 5x + 12 + 2x^2

Like terms: The terms who have same variable and exponent are called like terms.

So, Combining like terms and solving:

4- 2x + x^2 + 5x + 12 + 2x^2\\=4+12-2x+5x+x^2+2x^2\\Now \ solving:\\=16+3x+3x^2\\Rearranging \ the \ terms:\\=3x^2+3x+16

So, after finding like terms and solving, we get \mathbf{3x^2+3x+16}

<u><em>Note: In the question given we have - and + sign with the term 5x</em></u> i.e 4- 2x + x^2 -+ 5x + 12 + 2x^2

I have solved using +5x, but if the term is -5x then the solution will be:

4- 2x + x^2 - 5x + 12 + 2x^2\\=4+12-2x-5x+x^2+2x^2\\Now \ solving:\\=16-7x+3x^2\\Rearranging \ the \ terms:\\=3x^2-7x+16

So, the answer will be: \mathbf{3x^2-7x+16}

You might be interested in
The value of y varies inversely as the cube of x and y=1 when x=6. Find the value of y when x =2.
ch4aika [34]

Answer:

y=27 when x=2

Step-by-step explanation:

y varies inversely as the cube of x

y=k(1/X^3)

y=1 when x=6

y=k(1/X^3)

1=k(1/6^3)

1=k(1/216)

k=1÷1/216

K=1×216/1

k=216

find y when x=2

y=k(1/X^3)

y=216(1/2^3)

y=216(1/8)

y=216/8

y=27

3 0
3 years ago
I am not sure of the answers​
astra-53 [7]

Answer: 2 3/4 as an improper fraction would be B. 11/4

7 0
3 years ago
Read 2 more answers
How do I solve this problem
CaHeK987 [17]
Use cymath it gives you the answer :)
6 0
3 years ago
A Petri dish is growing bacteria. It starts with 3 cells on day 1, 9 cells on day 2, and continues tripling the number of cells
n200080 [17]

Answer:

243

Step-by-step explanation:

Given that:

Day 1 = 3

Day 2 = 9

After the 2nd day, number of cells continue to triple ;

Day 3 = 9^3

P(t) = 9 * 3^3

P(t) = 9 * 27

= 243

3 0
3 years ago
Solve the system of equations algebraically by using substitution method:
vredina [299]

Answer:

This system has infinite solutions and it would be much easier to solve it by elimination but substitution it is.

Step-by-step explanation:

-3x+3y=9

-x+y=3

Isolate either x or y in any of the equations. I'll go with the second.

y = 3+x

Now substitute this for y in the first equation.

-3x+3(3+x)=9

Distribute the 3

-3x+9+3x=9

Combine like terms:

9=9

0=0

It's infinite

3 0
3 years ago
Other questions:
  • A car can travel 300 miles in the same amount of time it takes a bus to travel 180 miles. if the rate of the bus is 20 miles per
    12·1 answer
  • Explain how a bar model can be used to show a subtraction problem
    12·1 answer
  • A scuba diver has a taut rope connecting the dive boat to an anchor on the ocean floor. The rope is 90 feet long and the water i
    9·2 answers
  • 6th grade math help me, please. :)
    12·1 answer
  • The perimeter of a rectangle is 36m. If its length is increased by 1m and the width is increased by 2m, its area will increase b
    15·1 answer
  • Create an equation that has exactly one real solution. 6(3x+4)-x=_x+3
    10·1 answer
  • The Hiking Club is taking another trip. The hike leader's watch shows that they gained 296 feet in altitude from their starting
    11·1 answer
  • What is the largest prime number?​
    7·1 answer
  • Use your answer to (a) and (b) to predict the values of 3/11, 4/11, and 7/11 as recurring decimals.
    5·1 answer
  • A triangle with a base of 16 cm and a height of 9 cm.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!