Which of the following is a factor of 3x^3-12x?
3x-4
x+2
x+3
x-4
2 answers:
Answer:
x + 2
Step-by-step explanation:
given
3x³ - 12x ← factor out 3x from each term
= 3x(x² - 4) ← x² - 4 is a difference of squares, hence
= 3x(x - 2)(x + 2) ← fully factorised
hence x + 2 is a factor of the polynomial
Answer:
x + 2
Step-by-step explanation:
3x^3 - 12x
=3x(x^2 - 4)
= 3x(x + 2)(x - 2)
so (x+2), (x - 2) and 3x are the factors of 3x^3 - 12x
answer:
x + 2
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