Question

Solve the following equation or inequality for the unknown variable. Round answer to two decimal places if necessary.

(3x)2 - 10 = 56
4
x =

Answer 1

x = 2.7

Explanation:

The given equation is :

`(3x)^2-10=56`

We need to solve it for x.

It can be rewrite as follows:

`9x^2-10=56`

Adding 10 to both sides,

`9x^2-10+10=56+10\\\\9x^2=66\\\\x=\sqrt{(66)/(9)}\\\\x=2.70`

So, the value of x is equal to 2.7.