Question

How do you solve `2k^2-2=144`?

Answer 1

`k = +-sqrt73`

Explanation:

Notice that all the numbers are even. The first thing to do is to divide by 2.

`k^2-1=72`

Usually in a quadratic equation, we make it equal to 0, but this is an exception because there is no `x-`term. Change it to `x^2 = c`

`k^2 = 73`

`k = +-sqrt73` Remember to take the positive and negative root.