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
Kay [80]
4 years ago
14

Some the system of equations

Mathematics
1 answer:
Pepsi [2]4 years ago
3 0
Y = 2x² - 3
y = 3x - 1

                             2x² - 3 = 3x - 1
                                  + 1        + 1
                             2x² - 2 = 3x
                      2x² - 3x - 2 = 0
                2x² - 4x + x - 2 = 0
2x(x) - 2x(2) + 1(x) - 1(2) = 0
          2x(x - 2) + 1(x - 2) = 0
                 (2x + 1)(x - 2) = 0
     2x + 1 = 0    or    x - 2 = 0
           - 1 - 1              + 2 + 2
           2x = -1      or      x = 2
            2     2
             x = -0.5

      y = 3x - 1            or           y = 3x - 1
      y = 3(-0.5) - 1        or        y = 3(2) - 1
      y = -1.5 - 1          or          y = 6 - 1
      y = -2.5            or             y = 5
(x, y) = (-0.5, -2.5)    or    (x, y) = (2, 5)
————————————————————————————————
                       3x² + x - 4 = 0
              3x² - 6x + 2x - 4 = 0
3x(x) - 3x(2) + 2(x) - 2(2) = 0
           3x(x - 2) + 2(x - 2) = 0
                  (3x + 2)(x - 2) = 0
      3x + 2 = 0    or    x - 2 = 0
            - 2  - 2             + 2 + 2
            3x = -2      or      x = 2
             3      3
              x = ⁻²/₃
There are two real number solutions in the equation.
————————————————————————————————
y = x + 5
y = x² - x + 2

   x + 5 = x² - x + 2
+ x             + x
 2x + 5 = x² + 2
       - 2         - 2
 2x + 3 = x²
         0 = x² - 2x - 3
         0 = x² - 3x + x - 3
         0 = x(x) - x(3) + 1(x) - 1(3)
         0 = x(x - 3) + 1(x - 3)
         0 = (x + 1)(x - 3)
         0 = x + 1    or    0 = x - 3
       - 1       - 1         + 3      + 3
        -1 = x       or       x = 3

      y = x + 5        or        y = x + 5
      y = -1 + 5        or       y = 3 + 5
      y = 4           or           y = 8
(x, y) = (-1, 4)    or    (x, y) = (3, 8)
You might be interested in
The sum of three consecutive terms of an arithmetic progression is 24, find the middle term?​
Delicious77 [7]

Answer:

Therefore,

Middle term = 8

Sequence,

a-d, a, a+d = 8-6, 8, 8+6

= 2,8,14

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Find a quadratic polynomial each with the given numbers as the sum and product of its zeroes
jasenka [17]

The quadratic polynomial each with the given numbers as the sum and product of its zeroes respectively as 3 /2 and 5 is 2x² - 3x + 10

<h3>What is a quadratic polynomial?</h3>

A quadratic polynomial is a polynomial of the form ax² + bx + c

<h3>How to find the quadratic polynomial?</h3>

For any given quadratic polynomial we have

x² - (sum of zeros)x + (products of zeros) = 0

Given that the sum and product of its zeroes respectively 3/2 and 5,

We have that

  • sum of zeroes = 3/2 and
  • product of zeros = 5

Substituting the values of the variables into the equation, we have

x² - (sum of zeros)x + (products of zeros) = 0

x² - (3/2)x + (5) = 0

x² - (3/2)x + (5) = 0

Multiplying through by 2, we have

2 × x² - 2 × (3/2)x + 2 × (5) = 0 × 2

2x² - 3x + 10 = 0

So, the quadratic polynomial each with the given numbers as the sum and product of its zeroes respectively as 3/2 and 5 is 2x² - 3x + 10

Learn more about quadratic polynomial here:

brainly.com/question/7784687

#SPJ1

4 0
2 years ago
<img src="https://tex.z-dn.net/?f=8%20-%20%20%7B2%7D%5E%7B2%7D%20%20%2B%203%20-%205" id="TexFormula1" title="8 - {2}^{2} + 3 -
Vlad1618 [11]

The answer should be 8+[(2^2)+3]-5

Hope this helps!


3 0
3 years ago
WILL GIVE BRAINIEST!!
AnnZ [28]

Answer:

its b

Step-by-step explanation:

thankkkkk me later

5 0
3 years ago
Number of Payphones
trapecia [35]

Answer:

B

Step-by-step explanation:

jUST DID IT

7 0
3 years ago
Read 2 more answers
Other questions:
  • The given line passes through the points (−4, −3) and (4, 1).
    7·2 answers
  • Graph the equation by translating y=|x|<br>y=|X+2|​
    8·1 answer
  • What is a solute in science
    15·2 answers
  • The diagram below shows line AB, line CD, and line EF. Identify two lines on the diagram that appear to be perpendicular to each
    12·1 answer
  • [PLEASE ANSWER QUICKLY] A bag of candy weighs 3 2/3 ounces. How much would 4 1/2 bags of candy weigh?
    11·1 answer
  • 1. It takes the earth 24 h to complete a full rotation. It takes Mercury approximately 59 days, 16 h, and 40 min to complete a f
    8·1 answer
  • $59 power tool, 5% sales tax
    7·2 answers
  • Question 8 of 10
    5·2 answers
  • Here is a picture of a ferris wheel. It has a diameter of 80 meters. On the picture, draw and label a diameter. What do I do????
    6·1 answer
  • Can some one help me with this and explain it?​
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!