Question

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Answer 1

4.4.4.4.4......4 = 8+8+8+...+8

(x-4)veces 8 veces

${4}^{(x - 4)} = 8 \times 8 \\ {4}^{(x - 4)} = 64 \\ {4}^{(x - 4)} = {4}^{3} \\ x - 4 = 3 \\ x = 7$

E = 4x - 1

E = 4(7) - 1

E = 28 - 1

E = 27

Saludos.