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

Question

asked Aug 4, 2021 230k views

2 Answers

Piotr Z · Answer 1 · 2021-08-10T04:24:56+0000

Answer:

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