Задание 15 (неравенство с логарифмом)

x^2*log(343)(x+3) ≤ log7(x^2+6x+9)

x^2*log(512)(x+5) ≥ log2(x^2+10x+25)

x^2*log(343)(x+4) ≤ log7(x^2+8x+16)

x^2 *log 625(x-6) <= log5(x^2-12x+36)

x^2log(625)(3-x) ≤ log5(x^2-6x+9)