Topic Details (Notes format)

How to Solve Exponential Equations

Subject: Mathematics

Book: Maths Mastery

Exponential equations have the variable in the exponent, such as 2^x = 8. One approach is to rewrite both sides using the same base. For example, 8 can be written as 2³, so 2^x = 2³ implies x = 3. In more complicated cases, you may take logarithms of both sides: If 5^x = 100, applying log yields x log(5) = log(100), so x = log(100)/log(5). Exponential equations govern growth phenomena, from population expansions to radioactive decay, making them central in biology, finance (compound growth), and physics. Mastering exponential solving ensures you can interpret and forecast exponential trends accurately.

Practice Questions

If x^2 - 5x + 6 = 0, what are the roots?

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If x² - 9x + 18 = 0, what are the roots of the equation?

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What is the sum of the interior angles of a hexagon?

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A rectangle has an area of 48 cm² and a length of 8 cm. What is its width?

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What is the area of a circle with a diameter of 14 cm?

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What is the HCF of 48 and 180?

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The LCM of two numbers is 60, and their HCF is 5. If one of the numbers is 20, what is the other number?

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The sides of a triangle are 7, 24, and 25. Is this a right triangle?

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The perimeter of a rectangle is 40 cm, and its length is 12 cm. What is its width?

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If 2x = 16, what is the value of x?

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