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
umka2103 [35]
3 years ago
6

If x+y= -4 and xy=2, then find the value of x²+y²​

Mathematics
2 answers:
never [62]3 years ago
7 0
X+y = -4
Xy=2

(x+y)^2= x^2+y^2+2xy
(-4)^2=x^2+y^2+2(2)
16 = x^2+y^2+4
x^2+y^2=16-4
Therefore x^2+y^2 = 12
masha68 [24]3 years ago
4 0

Answer:

x² + y² = 12

Step-by-step explanation:

x + y = -4

xy = 2

x² + y² = (x+y)² - 2xy = (-4)² - 2(2) = 16 - 4 = 12

You might be interested in
BillieÍs monthly cell phone bill includes the cost of cell phone service, 15% tax on the cost of the cell phone service, and a $
dem82 [27]
X - <span>the cost of cell phone service before tax is added

</span>x+15\%x+9.25=61&#10;\\x+ 0.15x=61-9.25&#10;\\1.15x=51.75&#10;\\x= \frac{51.75}{1.15}&#10;\\x= 45<span>
</span>
6 0
3 years ago
Simplify. Rewrite the expression in the form 5^n<br>(5^3)^2=<br>​
Temka [501]

Answer:

5^12

Step-by-step explanation:

index notation rules states that when there is a power inside AND outside the brackets, they shall multiply together. hence, we will multiply 3 and 2 so we will get 6 and thus the answer will be 5^6. Sike, that's not the answer, we forgot to multiply 5 with that power too... so we will get 25^6 because same power (outside brackey) will affect everything inside...

now after we got 25^6, we need to simplify it to get 5^n ....

so as we know 5^2 is 25, we can do this,

(5^2)^6 so we will multiply the powers to get

5^12 which is your answer :)

pls mark this as brainliestttt

6 0
3 years ago
Can someone help!!! ASAP
vekshin1
4/5 because look at the picture

6 0
4 years ago
Brainlest!! which of the following graphs represents a function HURRY. ​
ahrayia [7]

Answer:

Graph A and C

Step-by-step explanation:

Because for every x point there is just one y point.

5 0
3 years ago
Please help lol thankss
Mars2501 [29]

Answer:

what's your question though?

8 0
3 years ago
Read 2 more answers
Other questions:
  • 10) Mrs. Jimenez bought some jeans to sell at her store. The wholesale
    7·1 answer
  • 3x minus 7 divided by 2 equals negative 5
    7·1 answer
  • What is the volume of a hemisphere with a radius of 2.1 m, rounded to the nearest tenth of a cubic meter?
    9·1 answer
  • Help please !!!!!!!!!!
    8·1 answer
  • I need help with this please. I already did this problem but I think I made a mistake can you please look it over?
    7·1 answer
  • Find the area of the shaded region. round your answer to the nearest hundredth
    5·1 answer
  • Which equations are true for the values of x, y, and z? Select three options.
    12·1 answer
  • 114.3 is what percent of 288? Round to the nearest hundredth. Please don’t get this wrong.
    6·1 answer
  • Shala bought a pen on sale. She saved 17 percent of the original price of 29 dollars. About how much money did she save? A. 1 do
    13·1 answer
  • What is the correct solution to the equation 1 – (2x + 4) = –4x + 5?
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!