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. Continue reading →
How to solve a quadratic equation of the form ax^2+bx+c=0 using a Casio fx570ES or 991Es/Plus Calculator Solve the quadratic equation . Continue reading →
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