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
Rudik [331]
3 years ago
10

Simplify the expression 3a(3-a)+3(a^2-3)+3a

Mathematics
2 answers:
Readme [11.4K]3 years ago
4 0

Answer:

3 (4 a - 3)

Step-by-step explanation:

Simplify the following:

3 a (3 - a) + 3 (a^2 - 3) + 3 a

3 a (3 - a) = 9 a - 3 a^2:

9 a - 3 a^2 + 3 (a^2 - 3) + 3 a

3 (a^2 - 3) = 3 a^2 - 9:

3 a^2 - 9 - 3 a^2 + 9 a + 3 a

Grouping like terms, 3 a^2 - 3 a^2 + 9 a + 3 a - 9 = (9 a + 3 a) - 9 + (-3 a^2 + 3 a^2):

(9 a + 3 a) - 9 + (-3 a^2 + 3 a^2)

9 a + 3 a = 12 a:

12 a - 9 + (-3 a^2 + 3 a^2)

3 a^2 - 3 a^2 = 0:

12 a - 9

Factor 3 out of 12 a - 9:

Answer:  3 (4 a - 3)

Gre4nikov [31]3 years ago
3 0

Answer:

12a−9

Step-by-step explanation:

Distribute:

=(3a)(3)+(3a)(−a)+(3)(a2)+(3)(−3)+3a

=9a+−3a2+3a2+−9+3a

Combine Like Terms:

=9a+−3a2+3a2+−9+3a

=(−3a2+3a2)+(9a+3a)+(−9)

=12a+−9

You might be interested in
Which expression shows how to find 5/6 divided 2/3?
Yuliya22 [10]

1 1/4

Step-by-step explanation:

Use this to get answer for Fractions Cacluatorsoup. com

5 0
3 years ago
Read 2 more answers
What is the missing number ? <br> 1,8,27,64,125,216,?
Katena32 [7]

Answer:

64

Step-by-step explanation:

this is the sequence of cube. ... hence the sequence will be 1-8-27-64-125-216.

(wen 64 is already tere)

3 0
2 years ago
The book Kathy is reading is 540 pages long. So far, she has read 405 pages. What percent of the book does she have left to read
Elan Coil [88]
405/540 = 0.75 —> 75%

The answer is C.
8 0
3 years ago
Read 2 more answers
X 1/2 rational exponent
Lesechka [4]

Answer:

Step-by-step explanation:

Ok

7 0
3 years ago
If it costs $100,000 to put on an event for four weeks (28 consecutive nights), how much revenue per night is needed to
Arada [10]
100000+200000=300000
28x=300000
X=10714
They would need to make $10714 a night
8 0
3 years ago
Other questions:
  • 1. Solve for x. Show each step of the solution.<br> 4.5(8 - X) + 36 = 102 - 2.5(3x+24)<br> Answer:
    14·1 answer
  • Simplify 9r-2s-4r-3s
    10·2 answers
  • Use the distributive property to find the price. 5($5.91) a. $30.45 b. $29.55 c. $25.50
    6·2 answers
  • A hot air balloon climbs, at a 30 degree angle to the ground, to a height of 800 feet. To the nearest tenth of a foot, what grou
    6·1 answer
  • (MG1) Convert 11,000 feet per second into
    7·1 answer
  • a model sailboat like the one shown below was built using a scale of 1cm = 12ft. if the actual length of the boat is 84ft, how l
    10·1 answer
  • What times 7 eaqules 810?
    13·1 answer
  • What is the measure of angle R?<br> 0 37°<br> 0 53°<br> O90°<br> o 97°
    13·2 answers
  • What is 3x-2y=4 when written in slope intercept form
    14·1 answer
  • Ashley rode her bicycle 29.4 miles in 4 hours. She rode the same number of miles each hour. How many miles did ride her bike in
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!