Question

(3x-3)^2-(x-15)^2=0​

Answer 1

$(3x - 3) {}^{2} - (x - 15) {}^{2} = 0; \ (3x - 3 + x - 15)(3x - 3 - x + 15) = 0; \ 4x - 18 = 0, \ 2x + 12 = 0; \ 4x = 18, \ 2x = - 12; \ x = 4.5, \ x = - 6.$

Ответ: -6, 4,5