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Equação exponecial,mas a resposta não está dando exata
Tem uma questão de equação exponencial , na qual estou tentando responder mas a resposta não coincide no gabarito. A questão é:
2 elevado a x-1 + 2 elevado a x + 2 elevado a x+1 – 2 elevado a x-2 + 2 elevado a x-3 = 120.
Neste caso, começo a equação fatorando o termo 120? Ou coloco em evidência o termo 2x ?
Alguém pode resolver ?
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