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For quadratic functions having the folllowing properties:
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For Quadratic Functions Having The Folllowing Properties Look At Photo class=

Sagot :

sqdancefan

Answer:

  f(x) = -4x²+24x -28

Step-by-step explanation:

The given zeros are a sum and a difference. You can use the special factoring of the product of a sum and difference to simplify the product of the factors of the quadratic. Each zero 'p' corresponds to a factor (x -p):

  f(x) = a(x -(3 +√2))(x -(3 -√2)) = a((x -3)² -(√2)²) = a((x -3)² -2)

We can find the leading coefficient 'a' from the given point:

  f(1) = -8 = a((1 -3)² -2) = 2a

  a = -8/2 = -4

Then the function can be written as ...

  f(x) = -4((x -3)² -2) = -4(x² -6x +9 -2)

  f(x) = -4x²+24x -28

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