3+sqrt{z-1} =sqrt{z+14} 3+sqrt{z-1} =sqrt{z+14} @Mathematics

Question

anonymous · Answer

$$3+\sqrt{z-1 }= \sqrt{z+14}$$

agreene · Answer

z=2

but the way I got there.... I don't think you would know...

anonymous · Answer

$$3+\sqrt{z-11} = \sqrt{z+4}$$

anonymous · Answer

i got 2.

anonymous · Answer

i have to square both terms then use foil

anonymous · Answer

im just making sure they are correct cause i always make mistakes

anonymous · Answer

i have no clue how i posted the other problem

agreene · Answer

$$3+\sqrt{z-11} = \sqrt{z+4}$$
$$z=12$$


I've been using using phasor form and de moivre's

anonymous · Answer

oh yea i dont know what that is lol

agreene · Answer

basically, it's a quicker route then trying to get everything to FOIL correctly... but it involves switching to sin and cos ... which can be a bit more difficult if you're not used to it.

anonymous · Answer

oh yea i would totally get lost lol i have a hard time doing this darn math