Question

log2(2x+15)меньшеlog2(5x)+log2(x-4)

Answer 1

$2x+15 textless 5x(x-4) \ 2x+15 textless 5x^{2}-20x \ 5x^{2}-22x-15 textgreater 0 \ D = 784 \ x_{1} = 5 \ x_{2} = -0.6$

x ∈ (-∞; -0.6) + (5; ∞)