Question

Solve for x
3x^2 - 10 = -5

Answer 1

A

Explanation:

given

3x² - 10 = -5 ( add 10 to both sides )

3x² = 5 ( divide both sides by 3 )

x² =
`(5)/(3)`

Take the square root of both sides

x = ±
`\sqrt{(5)/(3) }` = ±
`(√(5) )/(√(3) )`

Answer 2

Add 10 to both sides

3x^2 = -5 + 10

Simplify -5 + 10 to 5

3x^2 = 5

Divide both sides by 3

x^2 = 5/3

Take the square root of both sides

x = √5/3

Simplify √5/3 to √5/3

x = ±√5/3

Answer: A. x = ±√5/3