2u^2(u+5)-34(4+5)-9(u+5)=0

Question

2u^2(u+5)-34(4+5)-9(u+5)=0

Answer 1

2u^2(u+5)-34u(u+5)-9(u+5)=0
u=-5
2u^2-34u-9=0
u23=(34+-корень(1156+72))/4=(34+-корень(1228))/4