Question

x^2+3^4=15^2determinati nr X​

Answer 1

x^2 + 3^4 = 15^2

x^2 = 15^2 - 3^4 = 225 - 81 = 144

x = radical 144

x = 12

Answer 2

${x}^{2} + {3}^{4} = {15}^{2}$

${x}^{2} + 81 = 225$

${x}^{2} = 225 - 81$

${x}^{2} = 144 \: = > x = 12$