Question

puteti sa ma ajutati?​

Answer 1

$7 = {2}^{1} + {2}^{0} + {2}^{2}$

$31 = {2}^{4} + {2}^{0} + {2}^{2}$

$90 = {3}^{4} + {3}^{2}$

$121 = {3}^{4} + {3}^{3} + {3}^{2} + {3}^{0} + {3}^{1}$

$129 = {2}^{7} + {2}^{1} \\ 129 = {5}^{3} + {5}^{2} + {5}^{2} + {5}^{0} + {5}^{0} + {5}^{0} + {5}^{0}$