Things to be aware of is distributing the equations correctly. Once we do that we distribute the letters and combine like terms according to x^2 and x and whole numbers. Once we have all that we plug in the rest intro our matrix. Be wary of numbers being correct and multiplied correctly.
Things to pay close attention to the numbers being multiplied. It's also highly advised to pay close attentions to make sure the numbers are inputted correctly. Make sure to plug in the numbers into your calculator correctly for the rref.
Things to be wary of in the video is the placement of your numbers and make sure you're always looking at the correct rows. More things to be wary of is making sure you distribute the negative correctly. Another thing to pay close attention is to plug in the numbers correctly into the calculator.