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Find all real solutions to the equation

x^4 - 40x^3 + 600x^2 - 4000x + 9375 = 0

 May 22, 2021
 #1
avatar+176 
+1

Factor is to get \((x-5)(x-15)(x^2-20x+125) \) which has solutions of \(x=5,x=15,x=10-5i,x=10+5i\)

 May 22, 2021
 #2
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0

real solutions would be x=5, x=15. complex solutions would be x=10-5i, x=10+5i

 May 22, 2021

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