Solve 9x2= 36
2
± 4
± 6
± 2
9x2 = 36
x2 = 36/9
x = ± 6/3 = ± 2
Oxidation state of S in [HSO4]− is
If |z−3|≤2, then maximum of |z+1| is
Number of π electrons in cyclobutadienyl anion (C4H4)−2 is