Question

Resolva a inequação(x2 - 4x - 5)(-x2 + 8x - 15)≥ 0.

Answer 1

(x<=√(16〖x_2〗^2-800x_2+10000)/64+(3x_2)/16+5/16 

x>=-√(16〖x_2〗^2-800x_2+10000)/64+(3x_2)/16+5/16 

x_2<>25

x=(3x_2+5)/16

x_2=25)