Question

Решите Уравнение: (6-x)(x+6)-(x-11)x=36

Answer 1

(6-x)(x+6)-(x-11)x=36

36-x^2-x+11=36

x^2+x-11=0

D=1+44=45

x1=(-1+3*sqrt5)/2

x2=(-1-3*sqrt5)/2

Answer 2

6x-x^2+36-6x-x^2+11x=36

-2x^2+11x=0

D=121

x1=(-11+11)/-4=0

x2=(-11-11)/-4=5.5