Q. Solve for the exact value of x.log2(8x)−2log2(6)=3Answer:
Apply power rule of logarithms: Apply the power rule of logarithms to the term 2log2(6). The power rule states that alogb(c)=logb(ca). Therefore, we can rewrite 2log2(6) as log2(62). log2(8x)−log2(62)=3
Simplify term 62: Simplify the term 62.62 equals 36, so the equation becomes:log2(8x)−log2(36)=3
Apply quotient rule of logarithms: Apply the quotient rule of logarithms to combine the logarithmic terms.The quotient rule states that logb(a)−logb(c)=logb(ca). Therefore, we can combine the logarithmic terms:log2(368x)=3
Convert to exponential equation: Convert the logarithmic equation to an exponential equation.Using the definition of a logarithm, we can rewrite the equation as:23=368x
Calculate 23: Calculate 23.23 equals 8, so the equation becomes:8=368x
Multiply by 36: Multiply both sides of the equation by 36 to solve for x.36×8=8x288=8x
Divide by 8: Divide both sides of the equation by 8 to isolate x.8288=x36=x
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