Answer:
(-84)<0
Step-by-step explanation:
[tex]3x {}^{2} + x + 7 \\ a = 3 \: \: b = 1 \: \: c = 7 \\ b {}^{2} - 4ac \\ 1 - 4(3)(7) \\ 1 - 84 \\ (- 84) < 0 \\ \\ [/tex]
no real roots
