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
Maksim231197 [3]
3 years ago
6

If x^2=20 what is the value of x will give brainliest for answer

Mathematics
1 answer:
Schach [20]3 years ago
8 0

Answer:

x² - 20 = 0

Using the quadratic formula

x =  \frac{ - b± \sqrt{( {b})^{2} - 4ac } }{2a}

a = 1 b = 0 c = -20

So we have

x =  \frac{ - 0 ±  \sqrt{ {0}^{2}  - 4(1)( -20)} }{2(1)}  \\  \\ x =  \frac{± \sqrt{80} }{2}  \\  \\ x =  \frac{±4 \sqrt{5} }{2}  \\  \\  \\ x = ±2 \sqrt{5}  \\  \\  \\ x = 2 \sqrt{5}  \:  \:  \: or \:  \:  \: x =  - 2 \sqrt{5}

Hope this helps you.

You might be interested in
7. A school field trip has 1,125 students divided
Juliette [100K]
You divide them, so 1,125 divided by 15=25. So your Answer is 75 students are on each bus.
5 0
3 years ago
Read 2 more answers
The relation R is shown in the table below.
Volgvan

Answer:

Domain: {-3, -1, 1}

Range: {-1, 2, 4, 5}

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Can someone please help me?
Feliz [49]

Answer:

m<2 = 150

Step-by-step explanation:

m<2 = 150 because of alternate exterior angles

7 0
2 years ago
Help Please!! On the 1st and 2nd one. just the decent and independent variable and the equation please!
Reika [66]
Hi, did you attach the picture for it?
6 0
3 years ago
Factorise each of the following algebraic expressions completely,
LekaFEV [45]

Answer:

see explanation

Step-by-step explanation:

(a)

Given

2k - 6k² + 4k³ ← factor out 2k from each term

= 2k(1 - 3k + 2k²)

To factor the quadratic

Consider the factors of the product of the constant term ( 1) and the coefficient of the k² term (+ 2) which sum to give the coefficient of the k- term (- 3)

The factors are - 1 and - 2

Use these factors to split the k- term

1 - k - 2k + 2k² ( factor the first/second and third/fourth terms )

1(1 - k) - 2k(1 - k) ← factor out (1 - k) from each term

= (1 - k)(1 - 2k)

1 - 3k + 2k² = (1 - k)(1 - 2k) and

2k - 6k² + 4k³ = 2k(1 - k)(1 - 2k)

(b)

Given

2ax - 4ay + 3bx - 6by ( factor the first/second and third/fourth terms )

= 2a(x - 2y) + 3b(x - 2y) ← factor out (x - 2y) from each term

= (x - 2y)(2a + 3b)

8 0
3 years ago
Other questions:
  • A pole that is 3.3 m tall casts a shadow that is 1.29 m long. At the same time, a nearby tower casts a shadow that is 36.75 m lo
    11·1 answer
  • PLZZZ HELP WHAT IS THIS:) &lt;3
    14·2 answers
  • Mary can type six letters in 20 minutes, Maggie can type five letters in 20 minutes, and Su Ying can type two letters in 20 minu
    6·1 answer
  • The 2000 population of a city was 710​,000 and was increasing at the rate of 1.49 % each year. At that​ rate, when will the popu
    5·1 answer
  • My math question to u<br><br>4 - 6x = 8
    6·2 answers
  • Please help it needs to be right
    10·2 answers
  • Classify the following triangle. Check all that apply.
    13·2 answers
  • Morgan buys 2 T-shirts that cost $14.95 each and 1 pair of shorts that costs $23.89. He gives the cashier $60.00. How much chang
    8·2 answers
  • You are sitting on the ground flying a kite.
    6·1 answer
  • If the points (1, -4) and (-1, r) and lie on a line whose slope is 5, what does r equal?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!