Question

What are the solution(s) to the quadratic equation 40 - x2 = 0?

Answer 1

First option

Explanation:

edge 2023

Answer 2

x = ±2√10

Explanation:

40 - x² = 0

⇌

(√40 - x)(√40 + x) = 0

⇌

x = √40 or x = -√40

we can go further and say that √40 = 2√10