You probably mean 144s² - 36 = 0

(12s + 6)(12s - 6) = 0 {factored the difference of two squares}

12s + 6 = 0 or 12s - 6 = 0 {set each factor equal to zero}

12s = -6 or 12s = 6 {subtracted 6 and added 6}

**s = -1/2 or s = 1/2** {divided each side of each equation by 12}

*- Algebra House*
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