How do you solve #6x^2-21x+15=0#?
2 Answers
x=
Explanation:
Start by simplifying your equation by factoring out a 3:
This equation cannot be factored with whole numbers, so you should use the quadratic formula:
So now:
x=
Explanation:
In order to complete the square move the last term (term without
Then you want to find a piece that allows you to find a square square of the left hand side
i.e.
or
In this equation
So if we add this term to both sides we get
Now the left hand side can be simplifed into merely
Find a common multiple for 16 and 6 and add them together
Square root both sides