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
A local little league has a total of 90 players of whom 20% are left-handed. How many left-handed players are there? Please help
german
18

First you want to change the 20% into a decimal which is .20
Next you want to multiply 90 by .20 because that will give you the answer for 20% of 90
90x.20=18

Hope that helps
7 0
3 years ago
What is a obtuse scalene.
Tomtit [17]

Answer:

In geometry, an obtuse scalene triangle can be defined as a triangle whose one of the angles measures greater than 90 degrees but less than 180 degrees and the other two angles are less than 90 degrees.

5 0
2 years ago
What’s the answer ? I’m stuck
Law Incorporation [45]
Angle M equals 45°
Angle N equals 15°
3 0
3 years ago
As part of a survey, 150 students were asked to name their favorite class. 50 points
disa [49]
A:40%
If you put 60 over 150 and x(percent of students) over 100 and cross multiply 100 and 60, you will get 6000. You then divide that by 150 which leaves you with 40 as x and 40 over 100 is 40%.
5 0
2 years ago
Help! 15 Points, FRACTIONS.
Dafna11 [192]

Answer:

7/8 estimated would be about 1 and 6/11 is almost a half so it would be estimated 1/2 so 1 - 1/2 = 1/2

3 0
2 years ago
Read 2 more answers
Other questions:
  • Find the next two terms of this sequence-7, 14 ,-28
    8·1 answer
  • Last one i need help with to move on! I have a pic of the question
    13·1 answer
  • si en la caja solo cabe media docena de platos, ¿ cuantas cajas serían necesarias para empacar la cantidad inicial de platos ?​
    10·1 answer
  • Square root of 9 I'll mark the 1st​
    10·1 answer
  • A shoe sales assciate earned $300 in August. In September she earned 8% more than sh did in August. How much did she earn in Sep
    7·2 answers
  • Help with the question above I have NO IDEA
    6·1 answer
  • Help will give brainliest !!! PLEASE ITS EASY
    9·1 answer
  • There are 4 circles and 16 squares. What is the simplest ratio of circles to the total of shapes
    10·1 answer
  • What is the slope of the following graph? (write your answer as a fraction unless divided by 1. Do not use spaces in your answer
    7·1 answer
  • What is the image point of (-8, 3) after the transformation R2700 0 T-2,-1?​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!