SOLUTION: Find all solutions of the equation. (Enter your answers as a comma-separated list.) 9x^2 + 49 = 0

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson -> SOLUTION: Find all solutions of the equation. (Enter your answers as a comma-separated list.) 9x^2 + 49 = 0      Log On


   

Question 951449: Find all solutions of the equation. (Enter your answers as a comma-separated list.)
9x^2 + 49 = 0
Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
9x%5E2+%2B+49+=+0
9x%5E2+=+-+49
x%5E2+=+-+49%2F9

x=+sqrt%28-+49%2F9%29

x=+sqrt%2849%2F9%29i
x=+%287%2F3%29i
or
x=+-%287%2F3%29i
solutions: %287%2F3%29i,-%287%2F3%29i

+graph%28+600%2C+600%2C+-5%2C5%2C+-5%2C+75%2C+9x%5E2%2B49%29+