I'm finding it difficult to solve this question
It's solving quadratic eqaution by completing the square
When solving the square of a quadratic in the form , first you put into brackets, .
So in the case of your question you get . However, if you multiply out ,you find that you get an extra 9 in your equation, to compensate for this you also place a -9 in your equation, giving you .
A little bit of rearranging should give you , which in turn leads to .
I presume you can continue from here to find the two solutions.
Step 1: Transpose the constant to the right hand side.
Step 2: Take half the coefficent of the linear term (x), square it, and add the result to both sides of the equation.
Step 3: You have just made the left side a perfect square trinomial.
Step 4: Take the square root of both sides.
I'll bet you can finish up, can't you?