title: How to use the Polynomial Trendline Formula
body: <p>So the blue line graph has values from column CM (x values are in column CF, sorry for the confusing presentation). I want to recreate the polynomial trendline that I had excel generate for it, which is what I'm trying to do in column CH, as you can see from the formula bar. </p>
  
  <p>Excel gives me the formula y = -0,0006x^2 + 0,013x + 0,1878 (shown on the chart) which I then have entered into the values in column CH.</p>
  
  <p>The result is unfortunately not even close (displayed as the orange line graph). Is there any person here sharp enough on maths to tell me what I'm doing wrong? </p>
  
  <p><a href="https://i.stack.imgur.com/skThy.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/skThy.png" alt="enter image description here"></a></p>