(a) Solve x2 + 5x + 2 = 0 (exact answer required).(b) If you have one of the calculators l...

(a) Solve x2 + 5x + 2 = 0 (exact answer required).

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(b) If you have one of the calculators listed below, use its polynomial solver to solve the equation in part (a). Does your answer agree with the one in part (a)?

Calculator	Use this menu/choice
TI-84 +	APPS/PolySmlt*
TI-86	POLY†
TI-89	ALGEBRA/Solve‡
Casio 9850	EQUATION (Main Menu)
HP-39gs	MATH/POLYNOM/Polyroot§

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(c) Use the solver to solve 3x4 − 2x3 − 5x2 + 2x + 1 = 0.

*If PolySmlt is not in the APPS menu, you can download it from TI.

†When asked for “order”, enter the degree of the polynomial.

‡Syntax: Solve(x2 + 5x + 2 = 0, x)

§Syntax: Polyroot([1, 5, 2])