Respuesta :

HomertheGenius
We will solve the equation:
x^2+5x-100≥0 [tex] x_{12} = \frac{-5\pm \sqrt{25+400} }{2}= \frac{-5\pm20.6}{2} [/tex]      x1≈-12.8   x2≈ 7.8
It means that x∈ (-∞, -12.8 ) ∪ (7.8, +∞ ).
Answer: C) x ≠ 7
Thank you.