Question

Which is a value of x, when 3x²+4=40

Answer 1

3x^2+4=40
3x^2=36
x^2=12
x=+or-sqrt(12)

:)

Answer 2

Hey there!

Let's solve the equation step by step!

`3 x^(2) + 4 = 40`

Subtract 4 from both sides.

`3 x^(2) = 36`

Divide both sides by 3.

`x^(2) = 12`

Solve the equation by taking the positive and negative root of 12.

`x = √(12) = 2 √(3) = 3.46... \\or\\ x = - √(12) = -2 √(3) =3.46...`

The exact answer includes the roots, the other answer is the answer in two decimals.
~Hope this helps you!