lbazor18st lbazor18st

16-04-2018
Mathematics

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Factor f(x)= 3x³+5x²-47x+15 into linear factors given that -5 is a zero of f(x)

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Аноним Аноним

16-04-2018

if -5 is a zero then f(x) is divisible by (x + 5)

the quotient when F*x) is divided by x + 5 is :-
3x^2 - 10x + 3
this factors to
(3x - 1)(x - 3)

so the answer is (x + 5)(3x - 1)(x - 3)

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