Answer
z=±$\sqrt 10$
Work Step by Step
Original Equation
3z²-30=0
Add 30 to both sides
3z²=30
Divide both sides by 3
z²=10
Take the square root of both sides
z=±$\sqrt 10$
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.