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tatyana61 [14]
3 years ago
9

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

Mathematics
1 answer:
AveGali [126]3 years ago
7 0
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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If (x-2) is the factor of the equation, then x = 2 should be the root of the the equation

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2 years ago
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klio [65]
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Remove bracket

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6 0
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