Answer:
Should I solve for t?
then if solve for t
[tex](t + 2)(t {}^{2} - 3t + 7) = 0 \\ t = 0 \\ t {}^{2} - 3t + 7 = 0 \\ t {}^{2} - 3t = - 7 \\ ( \frac{3}{2} ) {}^{2} = \frac{9}{4} \\ t {}^{2} - 3t + \frac{9}{4} = \frac{9}{4} - 7 \\ (t - \frac{3}{2} ) {}^{2} = - \frac{19}{4} \\ t - \frac{3}{2} = \frac{ \sqrt{19} }{2} i \\ t = \frac{ \sqrt{19} }{2} i + \frac{3}{2} \\ t=0 \ and \ t= \frac{ \sqrt{19} }{2} i ± \frac{3}{2}[/tex]
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