Question

Решите уравнение
((3х-21)^2)*(х+5)=(3х-21)*(х+5)^2

Answer 1

((3x-21)^2×(x+5)=(3x-32)×(x+5)^2
(3x-21)^2×(x+5)=(3x-32)×(x+5)^2
9x-441×x+5 =3x-32×x+25
9x+x+x=441-5+25
11x=421
x=38.2