# How to solve equations which have algebraic powers of x and e^x terms?

Aman Bansal
592 Points
10 years ago

Dear Vishal,

To solve exponential equations without logarithms, you need to have equations with comparable exponential expressions on either side of the "equals" sign, so you can compare the powers and solve. In other words, you have to have "(some base) to (some power) equals (the same base) to (some other power)", where you set the two powers equal to each other, and solve the resulting equation. For example:

• Solve 5x = 53.
•

x = 3

• Since the bases ("5" in each case) are the same, then the only way the two expressions could be equal is for the powers also to be the same. That is:

This solution demonstrates how this entire class of equation is solved: if the bases are the same, then the powers must also be the same, in order for the two sides of the equation to be equal to each other. Since the powers must be the same, then you can set the two powers equal to each other, and solve the resulting equation

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Thanks

Aman Bansal