Solve second or higher degree equations using calculator One hit to get the answer right away

hello everyone welcome back to my channel all right going back to the previous video that made about using calculator to solve for one variable first three now in this video I'm going to show you how to solve for secondary or higher degree when you have one variable let's start with this case so again you insert exactly how it looks on the paper into your calculator let me clear this first so have square plus 2X minus 3 equals zero right okay another thing is that so this one you can use the polynomial function on your calculator so it has the function to solve for binomial or trinomial you don't have to use this method but because because like to show you how to use calculator so that's why showed it here you could go to setup Alpha A2 and then select the result here have two degrees plus hit you and then there's one two minus three got one have two Roots equal one and equal negative three okay okay let's go back to the main window now use calculator use this screen so squared plus two minus three equals zero and then hit shift solve one equals twice all right it gives you equal one so we knew that this has two Roots equals one and equals negative three we got only one root so far how do you get this one well you do this so take everything on the left side and then divided by the value you just found so minus this number then hit skip shot again equals negative three you got another root right that's for problem now let's do this problem we have three to the plus seven to the minus 40 ax plus 38 equals zero okay insert exactly the same received solve one okay equal one does this have only one root how do you know may have another root two three or four all right do the same method you put everything you divide the left side by the value you just found divided by minus one okay so always put it into the form of minus value so if it's negative minus negative number okay then shift solve one equal to so you get another value of two all right and then you do it again divide by minus two Zips are one okay you got this number it's weird number so that means that you have no more Roots all right that's it if you find the video is helpful feel free to give it like share and subscribe to my channel in order to receive the most current videos don't forget to hit the Bell so that you won't miss anything I'll see you next time