Question

х^2+x^2-2*x*x*(-7/2)=45^2*7/2

Answer 1

х^2+x^2-2*x*x*(-7/2)=45^2*7/2
9x^2 = 14175/2
x^2 = 1575/2
x1 = -15*корень(7/2)
x2 = 15 * корень(7/2)