Question

find the roots of x^2-15​

Answer 1

Step-by-step explanation:

Explanation:

isolate

x

2

by adding 15 to both sides of the equation

x

2

−

15

+

15

=

0

+

15

⇒

x

2

=

15

take the square root of both sides

√

x

2

=

±

√

15

←

note plus or minus

⇒

x

=

±

√

15

Answer 2

Answer:

+- √15

Step-by-step explanation:

x^2 -15 =0

Or x^2 -15+15=15 [ adding 15 both sides]

Or x^2 = 15

Or x= √15