Solve for w over the real numbers:w (9 w^2 - 7) = 0
Split into two equations:w = 0 or 9 w^2 - 7 = 0
Add 7 to both sides:
w = 0 or 9 w^2 = 7
Divide both sides by 9:
w = 0 or w^2 = 7/9
Take the square root of both sides:
Answer: w = 0 or w = sqrt(7)/3 or w = -sqrt(7)/3