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
-BARSIC- [3]
3 years ago
13

Find the value of the expression x3−y3+x2+y2+3 by substituting x=−2 and y=1.

Mathematics
2 answers:
vaieri [72.5K]3 years ago
8 0

\\ \sf\dashrightarrow x^3-y^3+x^2+y^2+3

\\ \sf\dashrightarrow (-2)^3-(1)^3+(-2)^2+(1)^2+3

\\ \sf\dashrightarrow -8-1+4+1+3

\\ \sf\dashrightarrow -9+8

\\ \sf\dashrightarrow -1

Masteriza [31]3 years ago
8 0

Answer: -1

Concept:

Here, we need to understand the idea of evaluation.  

When encountering questions that gave you an expression with variables, then stated: "If x = a, y = b, z = c" (a, b, c are all constants), this means you should substitute the value given for each variable back to the expression.

Solve:

<u>Given information</u>

x = -2

y = 1

<u />

<u>Given expression</u>

x³ - y³ + x² + y² + 3

<u>Substitute values into the expression</u>

=(-2)³ - (1)³ + (-2)² + (1)² + 3

<u>Simplify exponents</u>

=-8 - 1 + 4 + 1 + 3

<u>Simplify by simple operation (addition/subtraction)</u>

=-9 + 4 + 1 + 3

=-5 + 1 + 3

=-4 + 3

=\boxed {-1}

Hope this helps!! :)

Please let me know if you have any questions

You might be interested in
It takes 36 minutes for 7 people to paint 4 walls. How long does it take 9 people to paint 7 walls?
algol [13]
It will take 49 minutes for 9 people to paint 7 walls
7 0
3 years ago
I WILL GIVE 20 POINTS TO THOSE WHO ANSWER THIS QUESTION RIGHT NOOOO SCAMS PLEASE
kotykmax [81]
The answer is 1,2,4,6,8 because the circle has a circumference of 9
4 0
2 years ago
Read 2 more answers
Ron has 24 coins with a total value of $3.00. The coins are nickels (5 cents) and quarters (25 cents). How many of each coin doe
Vesna [10]

Answer:

Ron has 15 nickels and 9 quarters

Step-by-step explanation:

Create a system of equations where n is the number of nickels and q is the number of quarters he has:

n + q = 24

0.05n + 0.25q = 3

Solve by elimination by multiplying the top equation by -0.25

-0.25n - 0.25q = -6

0.05n + 0.25q = 3

Add them together and solve for n:

-0.2n = -3

n = 15

So, Ron has 15 nickels. Find how many quarters he has by subtracting 15 from 24:

24 - 15

= 9

So, Ron has 15 nickels and 9 quarters.

3 0
3 years ago
What kind of line is y=3? horizontal, vertical,slanted?
Firdavs [7]

As there is no x axis it will have to be vertical as the y axis is already vertical


7 0
3 years ago
Help!!
yKpoI14uk [10]

Answer:

well....

Step-by-step explanation:

trow the apple

7 0
3 years ago
Other questions:
  • Can you work out G and H for me please. preferably telling me how you did it aswell
    5·1 answer
  • The product of 3/4 and a number is 16
    11·2 answers
  • What is the volume of a fish tank with dimensions 4 ft by 2 ft by 4 ft A 42 cubic inches B 36 cubic inches C 32 cubic inches D 3
    10·1 answer
  • Will markk the brainliest
    11·1 answer
  • Natasha charges 12$ per hour for babysitting in her neighborhood write an equation
    9·2 answers
  • You are one mile from the railroad station, and your train is due to leave in ten minutes. You have been walking at a steady rat
    10·1 answer
  • If a parallelogram is inscribed in a circle the it must be a
    9·2 answers
  • Its cost $3.55 to make a sandwich at the local deli shop to make a profit the deli sells it at a price that is 160% of the cost.
    9·2 answers
  • PLEASE HELPME NO ONE IS HELPING
    14·1 answer
  • If there are 125 persons in a club and they got 500.00 for lunch much money did they get together
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!