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Joey B
Joey B asked in Science & MathematicsMathematics · 10 years ago

How to write polynomial functions in standard forms with given zeros?

I don't remember anything about this math...

x = -2, 0, 1

What do

Update:

Actually, if you guys want to do all of them that would be great.

x = 3, 3, 3

x = 0, 4, -1/2

x= -1. -2. -3, -4

2 Answers

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  • Bob B
    Lv 7
    10 years ago

    Write the roots as factors that will be zero for the given value:

    (x + 2)

    x

    (x - 1)

    Multiply them out:

    (x + 2)(x - 1) = x^2 + x - 2

    x(x^2 + x - 2) = x^3 + x^2 - 2x

    Set that equal to y:

    y = x^3 + x^2 - 2x

  • TC
    Lv 7
    10 years ago

    x(x + 2)(x - 1) = 0

    x(x^2 + x - 2) = 0

    x^3 + x^2 - 2x = 0

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