173k views
1 vote
X^2+18=0 solve please

User Psyched
by
7.7k points

1 Answer

3 votes

9514 1404 393

Answer:

x = ±3√2i

Explanation:

Add -18 to both sides of the equation:

x^2 = -18

Take the square root of both sides:

x = ±√(-18)

Remember that 18=9·2 = (3^2)·2 and √-1 = i. Simplify.

x = ±(√(3^2))·(√2)·(√-1)

x = ±3√2i

User DSav
by
7.9k 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