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masya89 [10]
3 years ago
15

Which is the graph of f(x) = (x - 1)(x + 4)?

Mathematics
2 answers:
zheka24 [161]3 years ago
6 0

You can determine this by finding zeros of quadratic function,

(x-1)(x+4)=0\implies x_1=1, x_2=-4.

Which eliminates first and third option.

Now we have up and down parabolas left.

If we factor (x-1)(x+4)=x^2+4x+\dots we find that the coefficient before x^2 determines how it is turned, since its positive its an upward turned parabola hence the answer is the last graph.

Hope this helps.

Vlad1618 [11]3 years ago
4 0

Answer:

last graph

Step-by-step explanation:

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