Thread: I hate radicals...

i swear i'll never understand problems with radicals >.<

anyway:

show work if you can..someday i'll understand those things -.-..always confudling me..

Originally Posted by jcube69

i swear ill nvr understand problems with gd radicals >.<

anyways

show work if you can..someday ill understand those buggers -.-..always confudling me..

square both sides, you get





now square both sides again and continue

(and please, do not make the mistake of thinking , it is wrong and will tick your professor off)

Originally Posted by Jhevon

square both sides, you get





now square both sides again and continue

i did that u get then

thus ?

Originally Posted by jcube69

i did that u get then

you're right so far

quadratic formula not needed. the quadratic was easily factorable

thus ?

yes, x = 8 or x = 1 are the solutions to the quadratic. are both solutions valid for our original problem though?

also, that wasn't so hard, was it?

yes, x = 8 or x = 1 are the solutions to the quadratic. are both solutions valid for our original problem though?

also, that wasn't so hard, was it?

bah didnt think about that..8 woulnt work because the sqrt of 12 is not 2

thus it leaves only 1

Originally Posted by jcube69

bah didnt think about that..8 woulnt work because the sqrt of 12 is not 2

thus it leaves only 1

right. be aware that usually when you square things, you introduce erroneous solutions. you need to check when done

Originally Posted by Jhevon

right. be aware that usually when you square things, you introduce erroneous solutions. you need to check when done

yup... tyvm ^.^