10 squared equals 100. 102 = 10*10 10*10 = 100
16
10 squared means 10*10 which equals 100.
b= 10
100
109 = 9 + 100
10*10 = 100 so the answer is 10.
2 squared plus 2 x 3 = 10, 7 squared plus 7 x 2 = 63, 6 squared plus 6 x 5 = 66,8 squared plus 8 x 4 = 96 so 9 squared plus 9 x 7 = 81 + 63 = 144.
It is 16x squared plus 80x plus 100.Very complicated!
x=10
If I have this correct you are asking x^2 + 10^2 = 12^2 Then x=6.633249507108
C equals the square root of 1000 or 31.622776601683793319988935444327...