How do you solve #30x^2-5x=60#?
The contributor below solved it by factoring, here I'll solve it using my favourite method for quadratic equations : The Quadratic Formula.
So, like the contributor above, divide the entire equation by 5.
Subtract 12 from both sides.
Here is where we deviate from the factoring method : We take
And substitute it into the quadratic formula which is :
You'll get :