What are the solutions to the equation?

25x^2-9=0

25x² - 9 = 0

25x² + 0x - 9 = 0

x = - (0) + / - √ ((0) ² - 4 (25) (-9))

2 (25)

x = 0 + / - √ (0 + 900)

50

x = 0 + / - √ (900)

50

x = 0 + / - 30

50

x = 0 + 30 x = 0 - 30

50 50

x = 30 x = - 30

50 50

x = 0.6 x = - 0.6

Workings:

25x^2-9=0

(5x+3) (5x-3) = 0

x = 3/5 or - 3/5