Question

y^2-4
b^2-81
a^2-121
x^2-25

Answer 1

y^2 - 4 = 0
y^2 = 4
y = \/ 4
y = 2
>>>>>>>>>>>>>>>>
b^2 - 81 = 0
b^2 = 81
b = \/ 81
b = 9
>>>>>>>>>>>>>>>>>
a^2 - 121 = 0 .
a^2 = 121
a = \/ 121
a = 11
>>>>>>>>>>>>>>>>>>
x^2 - 25= 0
x^2 = 25
x = \/ 25
x = 5