For the student-produced response question below, solve the problem and record your answer in the Google Form accessed by clicking the acorn image to the right of the question. Your answer can be up to 5 characters for a positive answer and up to 6 characters (including the negative sign) for a negative answer. For a fraction that is too long (over 5 characters for positive, 6 characters for negative), type the decimal equivalent. For a decimal that is too long (over 5 characters for positive, 6 characters for negative), truncate it or round at the fourth digit. Type a mixed number as an improper fraction or its decimal equivalent. Don't include symbols or units such as a percent sign, comma, or dollar sign or in your typed answer. Check back next week for a video solution to the weekly posted question.
This system of equations is quickly solved using Desmos, but is there a way to do it by hand? As you will see, there's not just one way; there are at least two: the discriminant and completing the square. Let's take a look at all three methods. Duration: 14:23