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Vlad [161]
2 years ago
5

Is (x + 2) a factor of x + 6x2 + 3x – 10?

Mathematics
2 answers:
igomit [66]2 years ago
6 0

Answer:

no

Step-by-step explanation:

6x² + 4x - 10 in factored form is:

2(3x+5)(x-1)

Nezavi [6.7K]2 years ago
3 0

Answer:

Assuming that you actually mean that if (x+2) is a factor of x^{3}+6x^{2}+3x-10, the answer is yes.

Step-by-step explanation:

We need to do long division of the polynomial to figure out if this is true. I would show it here, but it is extremely difficult to do so. (Maybe someone could help me.) When I factor it, it does not leave a remainder, so this is true.

x^{3}+6x^{2}+3x-10= (x+2)(x^2+4x-5)

Another way one could figure this out is by graphing the equation x^{3}+6x^{2}+3x-10 on your graphing calculator or on just a graphing website, lake Desmos. The screenshot below shows the graph.

The polynomial will have a factor of (x-c) if the point (0,c) exists on the graph. The graph has the following three zeroes.

(0,-2), (0, -5), and (0,1)

As such, it has the three factors (x-(-2)), (x-(-5)), and (x-1).

Since (x-(-2)=(x+2), it is a factor of the polynomial.

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