Log7^2x-3Log7x+4=4 график функций

log₇²x - 3log₇x + 4 = 4log₇x = tt² - 3t = 0t (t - 3) = 0t = 0     или     t - 3 = 0                        t = 3 1) t = 0log₇x = 0x = 12) t = 3log₇x = 3x = 7³ = 343 

log₇²x - 3log₇x + 4 = 4 log₇x = t t² - 3t = 0 t (t - 3) = 0 t - 3 = 0 t = 3 1) t = 0 log₇x = 0 x = 1 2) t = 3 log₇x = 3 x = 7³ = 347