Question

Solve the equation: x^2-100 = 0
Select one:
a. x = 10, -10
b. x = 50, -50
c. x = 0, 10
d. x = 0, -10

Answer 1

Any thoughts on what to do first?

Answer 2

When doing algebra and you have an unknown like (x). You have to isolate the unkown on one side of the equation to start.

Answer 3

So how would we do that?

Answer 4

by doing x^2?

Answer 5

We have to isolate any unkown on one side of the equation. X^2 is our unknown. So we need to do some thing with the -100. What would the equation look like if you add 100 to both sides?

Answer 6

x^2-0=100?

Answer 7

So we have X^2=100 correct?

Answer 8

yeah

Answer 9

Now we are trying to solve for x so how do we \[x ^{2}=x\]

Answer 10

What would you have to do to x^2 to make it x?

Answer 11

would the answer be D

Answer 12

No

Answer 13

my bad it would be A. cus i combined the like terms and simplified it

Answer 14

x^2 -100=0
x^2 =100
now take square root on both sides
so it will be
x = 10 , -10 is the correct answer
u can check it by putting one by one both the term in the given equation in the place of x and if u will get same vale like 0=0 or 1=1 etc then it is correct

Answer 15

now it is yur job how to solve it
if u have any need of me then tell me

Answer 16

Great job