Quadratic Functions, Equations and Inequalities

Quadratic Functions, Equations and Inequalities

Secondary 3

The equation \[x^2+kx-6=0\] has a root \(x=2\).

  1. Find \(k\).

  2. Find the other root.

  3. Verify the other root by substitution.

Solution:

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Answer:(a) \(k=1\); (b) Other root \(-3\), which gives \(9-3-6=0\).

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