4 ms·
I don't know that it was ever hard.
by jimhefferon 7y ago
I don't know that it was ever hard.
- yxhuvud 7y agoIt is hard for the people that isn't comfortable doing symbolic algebra. I don't see how this method improves it for those.
- user271828 7y agoThey are https://www.youtube.com/watch?v=o_zoHxC4y-U https://www.youtube.com/watch?v=o_zoHxC4y-U
- mikorym 7y ago>> to make the quadratic equations easy They mean: to make the quadratic equation easy to remember. However, I don't think this will have any impact on the average high school student. The key is: >> Loh points out that the two roots, R and S, add up to -B when their average is -B/2. >> “So we seek two numbers of the form -B/2±z, where z is a single unknown quantity,” he says. We can then multiply these numbers together to get an expression for C. But you still have to derive the formula and their first example assumes A is fixed.
- saagarjha 7y ago> their first example assumes A is fixed This is usually how completing the square is taught, in my experience. The leading coefficient is handled later with "just divide everything by a".