Chapter 17: Activities 460
Chapter 17: Chapter 17: Chapter 17: Chapter 17: ActivitiesActivitiesActivitiesActivitiesThe Quadratic Formula
The Quadratic FormulaThe Quadratic Formula
The Quadratic Formula
Entering a Calculation
Entering a CalculationEntering a Calculation
Entering a Calculation
Use the quadratic formula to solve the quadratic equations 3x2+ 5x + 2 = 0 and
2x2Nx+ 3 = 0. Begin with the equation 3x2+5x+2=0.
1. Press 3 ¿ ƒ [A] (above ) to
store the coefficient of the x2 term.
2. Press ƒ [:] (above Ë). The colon
allows you to enter more than one
instruction on a line.
3. Press 5 ¿ ƒ [B] (above Œ) to
store the coefficient of the X term. Press
ƒ [:] to enter a new instruction on
the same line. Press 2 ¿ ƒ [C]
(above ) to store the constant.
4. Press Í to store the values to the
variables A, B, and C.
The last value you stored is shown on
the right side of the display. The cursor
moves to the next line, ready for your
next entry.