Which expression is equivalent to -\sqrt{54}?
-48\sqrt{6}
-28\sqrt{3}
-3\sqrt{6}
-4\sqrt{6}
Which expression is equivalent to 9x^{2} - 30x + 25?
(3x - 5)(3x + 6)
(3x + 5)(3x - 5)
(3x + 5)^{2}
(3x - 5)^{2}
Which expression is equivalent to 3 (3b - 4) ?
16b + 16
16b + 12
9b - 12
9b - 9