Q. Solve for the exact value of x.log2(9x)−log2(2)=5Answer:
Apply Quotient Rule: Apply the quotient rule of logarithms to combine the two logarithmic expressions into one.Quotient rule of logarithm: log2(a)−log2(b)=log2(ba)log2(9x)−log2(2)=log2(29x)
Use Logarithm Property: Rewrite the equation using the property of logarithms that states if log2(a)=b, then 2b=a.log2(29x)=5 implies 25=29x
Calculate and Solve: Calculate 25 and solve for x.25=32, so 32=29x
Isolate 9x: Multiply both sides of the equation by 2 to isolate 9x on one side.2×32=9x64=9x
Divide by 9: Divide both sides of the equation by 9 to solve for x.x=964
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