Final answer:
A scientific calculator is used for solving quadratic equations by elimination in high school mathematics.
Step-by-step explanation:
The type of calculator used for solving quadratic equations by elimination is a scientific calculator. A scientific calculator is capable of performing mathematical functions such as square roots, cube roots, and higher roots that are often needed when solving quadratic equations. It is important to familiarize yourself with the functions and capabilities of your specific calculator to accurately solve quadratic equations.