214k views
0 votes
If If 4/y = y show that y= 2,-2.

User Amfcosta
by
7.5k points

1 Answer

6 votes

If we have that


(4)/(y)=y

This is equivalent to:


4=y^(2)

If we solve for y, we get a square root. A square root has a positive and a negative result, so:


y=\pm\sqrt[]{4}=\pm2

y = 2 and y = -2

User Rebar
by
8.2k points

No related questions found

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories