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
statuscvo [17]
3 years ago
8

What are the exact solutions of x2 = 5x + 2? (1 point)

Mathematics
2 answers:
BigorU [14]3 years ago
7 0

Answer:

First one:

x = x equals 5 plus or minus the square root of thirty-three all over 2

Step-by-step explanation:

x² = 5x + 2

x² - 5x - 2 = 0

Using quadratic formula:

x = [-(-5) +/- sqrt[(-5)² - 4(1)(-2)]/2(1)

x = [5 +/- sqrt(33)]/2

bazaltina [42]3 years ago
6 0

Answer:

A. x equals 5 plus or minus the square root of thirty-three all over 2

Step-by-step explanation:

Let's move all the terms to one side:

x^2=5x+2

x^2-5x-2=0

Now, we want to use the quadratic formula, which states that for a quadratic equation of the form ax^2+bx+c=0, the roots can be found with the equation: x=\frac{-b+\sqrt{b^2-4ac} }{2a} or x=\frac{-b-\sqrt{b^2-4ac} }{2a}.

Here, a = 1, b = -5, and c = -2, so plug these in:

x=\frac{-(-5)+\sqrt{(-5)^2-4(1)(-2)} }{2(1)}=x=\frac{5+\sqrt{25+8} }{2}=\frac{5+\sqrt{33} }{2}

OR

x=\frac{-(-5)-\sqrt{(-5)^2-4(1)(-2)} }{2(1)}=x=\frac{5-\sqrt{25+8} }{2}=\frac{5-\sqrt{33} }{2}

Thus, the answer is A.

Hope this helps!

You might be interested in
Please someone help me!!
ozzi

Answer:

5 feet squared

Step-by-step explanation:

7 0
3 years ago
Need help with math probelm if do 5 stars
slamgirl [31]

Answer:

b) -9.25

Step-by-step explanation:

-1/4 = -0.25

-9 + -0.25 = -9.25

-10, -9.75, -9.5, -9.25, -9, -8.75, -8.5, -8.25, -8, -7.75, -7.5, -7.25, -7

Hope this helps!

4 0
2 years ago
Read 2 more answers
Please help I need it​
Vadim26 [7]
Question four should be -7, question five should be 99, and question six should be 56.

6 0
2 years ago
Read 2 more answers
Find the zeros of the polynomial function.
Ahat [919]
◆ QUADRATIC EQUATIONS ◆

given \: equation \: is \: , \\  \\  {x}^{2}  - 12x + 20 = 0 \\  \\  using \: quadratic \: formula \: , \\  \\ x =  \frac{ - b +  \sqrt{ {b}^{2} - 4ac } }{2a}  \:  \:  \:  \:  =   \frac{ - ( - 12) +  \sqrt{ { (- 12)}^{2} - 4(1)(20) } }{2(1)} \\  \\ x =  \frac{ - b +  \sqrt{ {b}^{2} - 4ac } }{2a}  \:  \:  \:  \:  =   \frac{ - ( - 12)  -   \sqrt{ { (- 12)}^{2} - 4(1)(20) } }{2(1)} \\  \\ x =  \frac{12 + 8}{2}  \:  \:  \:  \:  \: or \:  \:  \:  \: x =  \frac{12 - 8}{2}  \\  \\ x = 10 \:  \:  \:  \:  \: or \:  \:  \:  \:  \: x = 2 \:  \:  \: ans.
8 0
3 years ago
The sum of the digits of a two-digit number is 13. Twice the first digit is 1 less than the second digit. What is the two digit
Alex

Answer:

6 and 7

Step-by-step explanation:

10(13-X) + X= 13-9X. 3×2=6. 7-6=1. 7+6=13

4 0
3 years ago
Other questions:
  • How to subtract an integer
    14·2 answers
  • Find the sum of the first 15 numbers in a sequence that has a1 = 6 and d=4
    5·2 answers
  • What is the third quartile, Q3, of the data represented by the box plot? 0 12.5 20 65 143.75
    12·1 answer
  • Is y=-1/3x parallel or perpendicular
    7·1 answer
  • What is the equation that matches this table?
    13·1 answer
  • What is the slope and the y-intercept of the following linear equation?
    11·1 answer
  • Yellow line leaves station every 6 min and red line leaves every 8 min and they both leave at 4:15, when will they both leave at
    5·1 answer
  • I NEED HELP PLEASE!!!
    5·1 answer
  • ASAP RIGHT NOW. I AM ON A LIMIT RIGHT NOW. 100 BRAINLEST POINTS WHOEVER ANSWERS FIRST AND GETS IT CORRECT.
    7·1 answer
  • Pls solve this. this is of set class 9.
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!