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pashok25 [27]
3 years ago
6

Find a polynomial function f in standard form with zeros 3i, -2, 1

Mathematics
1 answer:
yanalaym [24]3 years ago
3 0
The first thing to remember is that when you have a zero of 3i, you will also have a zero of -3i. This is because of the way imaginary solutions are created (taking the square root of a negative number). When you take the sqrt you get TWO answers.
The factors for these zeros are (x - 3i)(x+3i)(x+2)(x-1)
When you multiply the factors, the polynomial will be:
x^4 + x^3 + 7x^2 + 9x - 18
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Answer:

x = 13.5

Step-by-step explanation:

We know that base angles of an isosceles triangle are equal. The base angles of the triangle are (4x)° each. The vertex angle of the traingle is (6x-9)°. So according to angle sum property of triangle,

6x - 9 + 4x + 4x = 180

=  > 6x - 9 + 8x = 180

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=  > 14x = 180  + 9 = 189

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Step-by-step explanation:

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Now, let the total amount he receives in a month be "y" and let the amount of cars sold be x.

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