Решите уравнение : (x-4)^2+(x+9)^2=2x^2
X^2 - 8x + 16 + x^2 + 18x + 81 - 2x^2 = 0 2x^2 - 2x^2 + 10x + 97 = 0 10x = - 97 x = - 97/10 = - 9,7
X²-8x+16+x²+18x+81=2x² 10x=-97 x=-9.7