Question

решите уравнение (x-3)^2=(25-x)^2

Answer 1

$(x - 3) {}^{2} = (25 - x) {}^{2} \ x {}^{2} - 6x + 9 = 625 - 50x + x {}^{2} \ - 6x + 9 = 625 - 50x \ - 6x + 9 - 625 + 50x = 0 \ 44x - 616 = 0 \ x - 14 = 0 \ x = 14$

Answer 2

помогите ещё с одним

Answer 3

(x+6)^2=(x-4)^2

Answer 4

(х+6)²=(х-4)²=х²+12х+36=х²-8х+16; 12х+8х=16-36;20х=-20; х=-1