Question

Ecuatia x la patrat +3x+4=0 nu are solutii reale... Adevarat sau fals?

Answer 1

$x^{2} +3x+4=0$
[tex]\Delta=3^2-4\cdot1\cdot4=9-16=-7 \ \textless \ 0\\ \Delta\ \textless \ 0 \;\;\rightarrow\;\;x_1\ne{x_2}\not\in{R}\\ adica\;ecuatia\;nu\;are\;solutii\;in\;multimea\;numerelor\;reale\;! [/tex]

Raspuns : adevarat ;