He derived it when squaring the (0.02 - 2x). If you use the foil method and multiply (0.02 - 2x) and (0.02 - 2x) -2x * -2x = 4x^2 -2x * 0.02 = -0.04x 0.02 * -2x = -0.04x 0.02 * 0.02 = 0.0004 If you add the -0.04x + -0.04x = -0.08x If you still don't understand, you should watch a video on squaring using the FOIL method :)
Everyone is saying this is perfectly explained but he did not explain how he got the -.08 for 4x2-.08=.0004....I see how we got 4x and the .0004 but not the middle number.
How did you get .08x for the denominator ? im so confused on how to do these types of problems & you didn’t go into enough detail on how to actually solve the problem you rather implemented the answers you got onto this paper without fully explaining how to get the values being written down
