Solving a system of nonlinear equations the cool way!

Описание: Learn how to solve the system of equations x+2y=3 and x^2-4y^2=1 with this basic trick for your algebra or precalculus class. The key here is to use the difference of two squares formula to factor x^2-4y^2, and then we do a substitution. Make sure you learn this trick for solving systems of equations, especially for the SAT or other standardized tests.
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