Question

3x² -2 = ab
express x as the subject of formula​

Answer 1

x = √ [(ab + 2)/ 3]

Explanation:

3x^2 - 2 = ab

3x^2 = ab + 2

x^2 = (ab + 2)/ 3

x = √ [(ab + 2)/ 3]

Answer 2

x = ±
`\sqrt{(ab+2)/(3) }`

Explanation:

Given

3x² - 2 = ab ( isolate the x² term by adding 2 to both sides )

3x² = ab + 2 ( divide both sides by 3 )

x² =
`\sqrt{(ab+2)/(3) }` ( take the square root of both sides )

x = ±
`\sqrt{(ab+2)/(3) }`