Question

B = { ∶ ∈ ℕ x
^2 − 25 = 0 }
write the following set in roster form​

Answer 1

Step-by-step explanation:

$B = { ∶ ∈ ℕ \: x</p><p>^2 − 25 = 0 }$

B = { ∶ ∈ ℕ x² − 25 = 0 }

x² − 25 = 0

(x− 5) (x + 5) = 0

x = 5 , x= -5

As x∈ ℕ

x is not equal to -5

x = 5

so B = { ∶ x∈ ℕ x² − 25 = 0 }

Roster form: B = {5}