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
vova2212 [387]
3 years ago
7

Solve. x^2 8x 25 = 0

Mathematics
1 answer:
kykrilka [37]3 years ago
6 0
This equation is unsolvable.
x^2+8x+16=0
(x+4)^2+9=0
(x+4)^2= -9
anything to the power of whatever has to be greater than -1, it means it can be 0 or more but never a negative number. If it is a negative number, then it is false.
You might be interested in
Write four and two hundred ninety-five thousandths
snow_tiger [21]

Answer:

4.295

Step-by-step explanation:

there ya gooooooooo

3 0
2 years ago
NEED HELP! ITS DUE NOW!
Rasek [7]

Answer:

oi bruv

Step-by-step explanation:

4 0
2 years ago
The sum of three numbers in <br> g.p. is 21 and the sum of their squares is 189. find the numbers.
sashaice [31]
Let the three gp be a, ar and ar^2
a + ar + ar^2 = 21 => a(1 + r + r^2) = 21 . . . (1)
a^2 + a^2r^2 + a^2r^4 = 189 => a^2(1 + r^2 + r^4) = 189 . . . (2)
squaring (1) gives
a^2(1 + r + r^2)^2 = 441 . . . (3)
(3) ÷ (2) => (1 + r + r^2)^2 / (1 + r^2 + r^4) = 441/189 = 7/3
3(1 + r + r^2)^2 = 7(1 + r^2 + r^4)
3(r^4 + 2r^3 + 3r^2 + 2r + 1) = 7(1 + r^2 + r^4)
3r^4 + 6r^3 + 9r^2 + 6r + 3 = 7 + 7r^2 + 7r^4
4r^4 - 6r^3 - 2r^2 - 6r + 4 = 0
r = 1/2 or r = 2
From (1), a = 21/(1 + r + r^2)
When r = 2:
a = 21/(1 + 2 + 4) = 21/7 = 3
Therefore, the numbers are 3, 6 and 12.
3 0
2 years ago
What is the equation of the line passing through the point (-2,-1) and perpendicular to the line y = 1/2x+5?
uranmaximum [27]

Step-by-step explanation:

the slope of a line is always the factor of x.

here : 1/2

it is the ratio y/x indicating how many units y changes, when x changes a certain angina amount of units when going from one point to another.

a perpendicular slope puts x and y upside-down and flips the sign.

here : -2/1 = -2

so, the equation looks like

y = -2x + b

b is the y-intercept, and we get this by putting the x and y coordinates of the given point into this equation and solve for b :

-1 = -2×-2 + b

-1 = 4 + b

b = -5

the full equation is therefore

y = -2x - 5

3 0
2 years ago
Find the area. Simplify your answer.
Alona [7]

Answer:

Area = 6x - 6

Step-by-step explanation:

Given:

Height = 2x - 2

Base = 6

Required:

Area

Solution:

Area of triangle = ½*b*h

Area of the triangle = ½*6*(2x - 2)

Area = 3(2x - 2)

Apply distributive property

Area = 6x - 6

7 0
3 years ago
Other questions:
  • How many relay teams of 4 members can be chosen from a 6 member team to run in a relay race?
    6·1 answer
  • What is the answer to 4/7 x - 3 =6
    8·2 answers
  • Brandon solved the following division problem: Mrs Stokes is taking the fourth
    13·1 answer
  • Can someone help me?
    8·2 answers
  • My question is what is 7+6x=3x+3+4x
    13·1 answer
  • What is the inverse of f(x)=(x+6)^2 for x≥–6 where function g is the inverse of function f?
    5·1 answer
  • Does anyone know the answer to this?!
    7·2 answers
  • Need help 8th grade math
    12·2 answers
  • What is the prime factorization of 603
    11·1 answer
  • Find the measures of the exterior angels of the polygon. PLEase help give right answer please
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!