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Use the quadratic formula on $0.5 x^{2} + 2 x - 6 = 0$ . The roots are:

Class 10The Quadratic FormulaAlgebra — Quadratics

A-2 and 6
B1 and -3
C2 and -6
D4 and -12

Step-by-Step Solution

a = 0.5, b = 2, c = - 6. D = 4 + 12 = 16, D = 4.2 a = 1

, so

x = \frac{- 2 \pm 4}{1} = 2

or -6. (Denominator 2 gives 1 and -3; denominator 0.5 gives 4 and -12 — both wrong.)

Answer: C) 2 and -6

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