Asked by brian
what are the real solutions of
750=x^3-15x^2+50x
750=x^3-15x^2+50x
Answers
Answered by
Reiny
x^3 - 15x^2 + 50x - 750 = 0
x^2(x-15) + 50(x-15) = 0
(x-15)(x^2+50) = 0
x = 15 or x = ±√-50 which is not real
so x = 15
x^2(x-15) + 50(x-15) = 0
(x-15)(x^2+50) = 0
x = 15 or x = ±√-50 which is not real
so x = 15
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