Given:
The equation is, x² - x-3 = 0.
The objective is to find whether the equation can be factorised or not.
The nature of roots can be calculated using the equation,
[tex]b^2-4ac=0[/tex]From the given equation,
[tex]\begin{gathered} a=1 \\ b=-1 \\ c=-3 \end{gathered}[/tex]Substitute the values of a, b and c in the general equation.
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