berinboben berinboben
  • 22-05-2021
  • Mathematics
contestada

please help me and we should use laws of exponents​

please help me and we should use laws of exponents class=

Respuesta :

sreedevi102
sreedevi102 sreedevi102
  • 22-05-2021

Answer:

3.b

[tex](\frac{8}{3})^{2x+1} *(\frac{8}{3})^{5} =(\frac{8}{3}) ^{x+2}\\\\(\frac{8}{3})^{2x+1 +5} =(\frac{8}{3}) ^{x+2}\\\\\\2x +6 = x+2\\x = -4[/tex]

i hope question 3.a. is 5^x ÷ 5^-3 = 5^5

3.a.

[tex]\frac{5^x}{5^{-3}} = 5^5\\\\5^ {x+3} = 5^5\\\\x+3 = 5\\x =2[/tex]

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