Question

Resolva as equações exponenciais:​

Answer 1

Explicação passo-a-passo:

16= 2×2×2×2= 2^4

49= 7×7= 7²

25= 5×5= 5²

d)

${2}^{2x} = 16 = > {2}^{2x} = {2}^{4} = > 2x = 4 = > x = \frac{4}{2} = > x = 2$

e)

${7}^{5x - 13} = 49 = > {7}^{5x - 13} = {7}^{2} = > 5x - 13= 2 = > 5x = 2 + 13 = > 5x = 15= > x = \frac{15}{5} = > x = 3$

f)

f)

${5}^{2x - 2} = 25 = > {5}^{2x - 2} = {5}^{2} = > 2x - 2 = 2 = > 2x = 2 + 2 = > 2x = 4 = > x = \frac{4}{2 } = > x = 2$

Bons estudos...!!!