Question 479000
16s² - 9 = 0 
16s² = 9 {added 9 to both sides}
s² = 9/16 {divided both sides by 16}
s = ±√(9/16) {took square root of both sides}
s = ± 3/4 {evaluated square root of 9/16}
s = 3/4 or - 3/4 {split, using the ± sign}
<br>For more help from me, visit: <a href = "http://www.algebrahouse.com/" target = "_blank">www.algebrahouse.com</a><br><br><br>