Maths help

quadratic formula

Put your completed square form equal to 0. Now you have an equation with a single x you can solve for.

I’ve already tried and gotten root 69 over 3 and it says it’s wrong

Maybe show your working?

No it’s one answer box

Please read the sticky at the top of the forum about getting hints.
The flipside is you're expected to show how you tried to get the solution.

This is what I did and it says it’s wrong but I don’t get how

“Given that the solutions of the equation 3x^2-12x-11=0 can be written as c +/- root d, where c and d are rational numbers. Find the value of c and d.”
So far I’ve found the completed square which is 3(x-2)^2-23 and I’ve found c to be 2

You have sqrt(23/3)
What do you do then? What is d?

quadratic formula song

Already tried that

I did square root it and I got the square root of 69 over 3, and it says it’s incorrect

So I sqrt the sqrt of 69/3I just did that and I got 1.663993576, it asks for the answer to be in a fraction and it it’s simplest from

What is the fraction INSIDE the square root.

What is the fraction INSIDE the square root.

Sqrt69/3