(m+17)!=420*(m+15)! помогите решить уравнение
(m+17)! = 420(m+15)!
(m+16)(m+17)=420
m^2+33m+272-420=0
m^2+33m-148=0
D=1089+592=1681
m = 37
m = -4
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Verified answer
(m+17)! = 420(m+15)!
(m+16)(m+17)=420
m^2+33m+272-420=0
m^2+33m-148=0
D=1089+592=1681
m = 37
m = -4