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
Masja [62]
3 years ago
9

(a+2)(a-1) - (a+1)(a-2), if a = 2​

Mathematics
1 answer:
Artist 52 [7]3 years ago
8 0

Answer:

4

Step-by-step explanation:

(a+2)(a-1) - (a+1)(a-2)

put a=2

(2+2)(2-1) - (2+1)(2-2)

4*1 -3*0

4-0

4

You might be interested in
Factor yz + 6 + y +6z.<br> z + 1)(y + 6)<br> (z - 1)(y + 6)<br> (z + 6)(y - 1)
Sedbober [7]
The answer is the first one: (z+1)(y+6).

Explanation:

yz + 6 + y + 6z

= yz + y + 6 + 6z

= y(z+1) + 6(1+z)

= (z+1)(y+6)

For (z+1), you can also write (1+z), it doesn’t matter.

Hope it helps!

8 0
3 years ago
Mr. and Mrs. Jones plan on retiring on 70 percent of their pre-retirement earnings. If they earned $47,000 the last year before
saveliy_v [14]
$32,900

Multiple their current earnings, multiply it by 0.7 (70%), and the result is $32,9000
8 0
3 years ago
Read 2 more answers
Tammy wrote ordered pairs (x, y) using the pattern below.
REY [17]

Answer:

A:(15,18)

Step-by-step explanation:

Hopefully this helps!

7 0
2 years ago
What is the sum of 85 and 34?
snow_tiger [21]
The total sum is 119
3 0
3 years ago
Read 2 more answers
What is 3 tenths more than 8.154 ? What is 2 and 2 tenths more than 1.425? Explain please !
Anna11 [10]
8.454 is 3 tenths more than 8.154
3.625 is 2 and 2 tenths more than 1.425

Place values after the decimal point are tenths, hundredths, thousandths, ten thousandths...so on.

So 3 tenths looks like this 0.30 ⇒ 3 is in the tenths place. When you say 3 tenths more, it is a clue that the operation to be done is addition. thus,

   8.154
<u>+ 0.30
</u>   8.454   * in addition or subtraction, the decimal points must be aligned to avoid confusion. 

2 and 2 tenths is like this 2.20 ⇒ 1st 2 is in the ones or units place and the 2nd 2 is in the tenths place. Again it states more than so addition must be done.
 
   1.425
<u>+ 2.20</u>
   3.625
<u>

</u>
6 0
3 years ago
Read 2 more answers
Other questions:
  • Which of the following best describes the expression 3x + 2y + 8z?
    13·2 answers
  • Distribute the expression. <br><br> 6(3r2 – 4r + 7)
    11·2 answers
  • If the sum of interior angle is 3780 degree.find the number of sides
    14·2 answers
  • A reaction with a percent yield of 45% produces 900 g of product. What was the
    5·1 answer
  • Evaluate each of the following when y=7
    8·1 answer
  • A point with a positive x-coordinate and a negative y-coordinate is reflected over the y-axis.
    12·2 answers
  • A jewelry store is having a sale, and all items are 15% off. If a necklace was originally price at $85.00, what is the sale pric
    8·1 answer
  • 9 negative exponent 8
    13·1 answer
  • What is p - 5, for p = 19 in Algebraic Expressions 14 7 44 79
    7·2 answers
  • (05.02)The area of the parallelogram below is ___ square meters
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!