Question

1^2+5^x+9^2x+13^2x.................... infinite ​

Answer 1

Answer:

${1}^{2} + {5}^{x} + {9}^{2x} + {13}^{2x}......$

${13}^{2x} + 17 ^{4x} + 21 ^{4x}$

Because,

$1 + 4 = 5 \\ 5 + 4 = 9 \\ 9 + 4 = 13 \\ 13 + 4 = 17 \\ 17 + 4 = 21 \\ 21 + 4 = 25... \\ so \: on.$

so on....

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