Solve the equation: √x+1 = x-1

Answers

Answer 1

Answer: $√(x+1) = x - 1 \n \n x + 1 = (x - 1)^2 \n \n x + 1 = x^2 - 2x + 1 \n \n x = x^2 - 2x \n \n x - x^2 + 2x = 0 \n \n 3x - x^2 = 0 \n \n x(3 - x)= 0 \n \n x = 0,3 \n \n x = 0 \ is \ false \n \n x = 3$

The final result is, x = 3.

The solutions we gather were x = 0,3.
We dropped x = 0 from the equation since it does not become true, so we are left with x = 3.

Answer 2

Answer: √x + 1 = x - 1
↓
√x = x - 1 + 1
↓
√x = x

Since 1 is the only real number whose square root equals itself, we can safely assume that x = 1.
Hope that helped! =)

Related Questions

15 sweets are shared equally between 5 boxes.a) How many sweets will there be in each box? b) Ali takes all of the striped pink boxes. How many sweets does Ali get?
What's the answer for: 8u+8+8i=80
A printer printed 68 letters in 4 seconds. If it prints letters at a constant speed, it can print ______ letters in 30 seconds.
A music club has 35 drum players. If 25% of the total number of members in the club are drum players, what is the total number of members in the club?60 70 120 140
How do you write 36% as a fraction or whole number in simplest form?

Jim has three times as many comic books as Charles. Charles has 2/3 as many books as Bob. Bob has 27 books. How many comic books does Jim have?

Answers

$(2)/(3)*27=18$ Charles books
$18*3=54$ Jim books
Him have 54 comic books

Pressure head of 120 inches of water produces _______ psi of pressure

Answers

4.335275019289474 this is water column by the way.

Sama has $12. She buys a book for $9. How much money does Sama now have? (1 F
$

Answers

the answer is that you have $3 left

Please look at the question and answer

Answers

Answer:

no . of items = 10

Position of mean = (n+1)/2

= 11/2 = 5.5th item

In the data 5.5 item is the average of 5th and 6th item

median = (x+2+x+4)/2

or 25= (2x+6)/2

or 50 = 2x +6

0r 2x = 44

x =22

Answer:

X=23

Step-by-step explanation:

11,13,15,19,_,_,30,39,46

The middle number is the first dash which is represented by x+2 which is equal to 25

25-2=23 which is x

Dash 2 which is represented by x+4 is equal to 23+4=27

The volume of a cube is 343 cubic centimeters. how many centimeters long is each edge of the cube?

Answers

If the volume is 343 cubic cm the length of each side is 7cm.

Two friends take a drive around the city. When they get home, they look at the odometer and their watches, and determine they traveled 54 miles in 72 minutes. What was their average speed in miles per hour?

Answers

x miles per hour means that x miles / 60 minutes
If they traveled 54 miles / 72 minutes, so:
72 minutes - 60 minutes = 12 minutes
$(12)/(60) = 0,2$
60 minutes = 1
12 minutes = 0,2
1 + 0,2 = 1,2 hour
V = s/t
v - velocity or speed
s - linear distance traveled
t - time, so...
we must divide 54 miles by 1,2 hour = $54:1,2= 45$
Now, as we all know...
Their average speed was 45 miles per hour.

the question asks for the speed in miles per hour, so first thing we have to do is convert 72 minutes into hours by dividing by 60: 1.2 hours.
speed = distance / time
speed = 54 miles / 1.2 hours
speed = 45 miles/hour aka miles per hour aka mph

Other Questions

There are 77 students in the student council. The ratio of girls to boys is 7:4. How many girls are in the student council?

The cheerleaders are practicing a dance routine in which all 36 of them need to be in a triangular formation. there will be two more cheerleaders in each row than the previous row. how many rows will be in the formation

I am single also help me wha 1000 times 6 divided by 2 plus 6 divided by 8

Factor w^2-7w-8 show work