Answer:
7)[tex]2^x=2^8x-15[/tex]
Apply exponents rules
[tex]x=8x-15[/tex]
Solve [tex]x=8x-15: x=\frac{15}{7} \\[/tex]
Answer: [tex]x=\frac{15}{7} \\[/tex]
8)[tex]4^x=2^x+1\\2x=x+1\\x=1[/tex]
Answer : [tex]x=1[/tex]
9)[tex]5^x+3=7^x\\(x+3) in (5)=xln(7)\\x=\frac{3ln(5)}{in(7)-in(5)}[/tex]
Answer: [tex]x=\frac{3ln(5)}{in(7) -in(5)}[/tex]
Step-by-step explanation:
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