Question

How do you solve X squared equals 40

Answer 1

Good evening ,

Answer:

x = √40 or x = -√40

Explanation:

x² = 40 ⇌ x² - 40 = 0 ⇌ x² - (√40)² = 0 ⇌ (x - √40)(x + √40) = 0

⇌ x = √40 or x = -√40

Answer 2

x = ±sqrt(40)

x = ±2 sqrt(10)

Explanation:

x^2 = 40

Take the square root of each side

sqrt(x^2) = ±sqrt(40)

x = ±sqrt(40)

x = ±sqrt(4) sqrt(10)

x = ±2 sqrt(10)