Question

помогите с уравнением, срочно!
(x+5)^4 -10(x+5)^2 +9=0

Answer 1

(х+5)*4-10(х+5)*2=-9
(4-10*2)*(х+5)=-9
(4-20)*(х+5)=-9
-16(х+5)=-9
х+5=9/16
х=9/16-5
х=-71/16