because if the x -2 is a negative number, the square root would also be a negative number. However, if x - 2 is a positive number, then the square root would be positive, it really depends on what x is. Your comment was posted 9 months ago, but I still wanted to reply for those who are just watching this video.
Is this actually an inverse function without a domain restriction of x is greater than or equal to zero. I thought inverse functions had to be one-to-one and -2,2 and -1,1 etc different inputs give the same output 6 and 3
hey ur a great help so far, at 3:18 u said u phrased y= x-2 why is there a negative two instead of a positive or like why did it change as u switched the x and y ?...
I see the source of confusion....so I kinda skipped a step. Basically I first brought the +2 over to the left side and it became -2. Then I switched sides of the equal sign.....If I have x = 3....I can also write 3 = x. Same thing. Makes sense?
ur the best 4 taking your time to help students of the internet in such a way. big love
This is a lifesaver
Glad it helped :))
Why is it + or - when we square root? i.e. at timeline 3:38. Thanks
because if the x -2 is a negative number, the square root would also be a negative number. However, if x - 2 is a positive number, then the square root would be positive, it really depends on what x is. Your comment was posted 9 months ago, but I still wanted to reply for those who are just watching this video.
@@dreamscripter162 just about to ask the same question, thank you so much!
Is this actually an inverse function without a domain restriction of x is greater than or equal to zero. I thought inverse functions had to be one-to-one and -2,2 and -1,1 etc different inputs give the same output 6 and 3
hey ur a great help so far, at 3:18 u said u phrased y= x-2 why is there a negative two instead of a positive or like why did it change as u switched the x and y ?...
I see the source of confusion....so I kinda skipped a step. Basically I first brought the +2 over to the left side and it became -2. Then I switched sides of the equal sign.....If I have x = 3....I can also write 3 = x. Same thing. Makes sense?
@@AllThingsMathematics perfect thanks!!!!!
@@AllThingsMathematics also do u have a videos Radicals and Linear Inequalities?