Very-Short-Answer Questions

Question:

Very-Short-Answer Questions

Show that $x=-2$ is a solution of $3 x^{2}+13 x+14=0$.

 

Solution:

The given equation is $3 x^{2}+13 x+14=0$.

Putting x = −2 in the given equation, we get

$\mathrm{LHS}=3 \times(-2)^{2}+13 \times(-2)+14=12-26+14=0=\mathrm{RHS}$

∴ x = −2 is a solution of the given equation.

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