Question

Solve the following equation algebraically:
X^2=20

Answer 1

what is the opposite of an exponent to the second value

Answer 2

square?

Answer 3

root

Answer 4

taking the sqrt of both sides will eliminate the ^2 on he left side

Answer 5

correct

Answer 6

These are my answer options though


a.
4.47
b.
-3.97, 3.97
c.
-10, 10
d.
-4.47, 4.47

Answer 7

yes because you don't know if x is negative or not so you have two possible answers :)

Answer 8

did you plug the sqrt of 20 on the calculator already?

Answer 9

Yes I did, Its D

Answer 10

correct :)

Answer 11

yep

Answer 12

Thank you both so much!

Answer 13

Below, x is the variable, and k is a number.

The solution of the equation

\(x^2 = k\)

is

\(x = \pm \sqrt k\)

Answer 14

With the above in mind,

\(x^2 = 20\)

\(x = \pm \sqrt 20\)