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How to solve any single-variable equation using the Shift-Solve function of a Casio fx570ES or 991Es/Plus Calculator

Solve the quadratic equation x^2-x-56=0.

SOLUTION:

Please watch the video for the solution. 

This entry was posted in Algebra, Engineering Mathematics Blog, Mathematics and tagged Calculator Techniques, casio 570, casio fx991es plus, quadratic equation, solution of quadratic equation on March 31, 2018 by Engineering Math.

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