Question

Решите уравнение (х - 12)(х + 12)=2(x - 6)2 - x2.​

Answer 1

Ответ:

${x}^{2} - 144 = 4x - 24 - 2x \\ {x}^{2} - 2x - 120 \\ d = {b}^{2} - 4ac = 4 + 480 = 484 = {22}^{2} \\ {x}{1} = - 10 \\ x2 = 12$