Question

Qual o valor de x na equação exponencial 7 ³ ͯ ⁺ ⁷ = 7? *

3 pontos

(a) - 2

(b) - 1

(c) 1

(d) 2

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Answer 1

$\boxed{\begin{array}{c}\sf{Qual~o~valor~de~x~na~equac_{\!\!,}\tilde{a}o~exponencial}\end{array}}\\\sf{7^{3x+7}=7?}\\\rm{\underline{soluc_{\!\!,}\tilde{a}o}}\\\sf{7^{3x+7}=7}\\\sf{3x+7=1}\\\sf{3x=1-7}\\\sf{3x=-6}\\\sf{x=-\dfrac{6}{3}}\\\huge\boxed{\boxed{\boxed{\boxed{\tt{x=-2}}}}}\\\huge\boxed{\boxed{\boxed{\boxed{\sf{\maltese~alternativa~a}}}}}$

Answer 2

Resposta:

x=-2

Explicação passo-a-passo: