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arlik [135]
3 years ago
8

Which zero pair could be added to the function f(x)=x2 +12x+6 so that the function can be written in vertex form

Mathematics
1 answer:
Gnom [1K]3 years ago
3 0

The most general proccedure for this type of problems is the following:

For a quadratic function of the following form f(x)=x^2+bx+c; where b and c are real numbers.

1) Identify the value that accompanies the x, that is, the value "b"

2) Divide the value of b by 2 and then square it: (\frac{b}{2})^2

3) Add and subtract in the function the value of  (\frac{b}{2})^2

4) Write the complete function of the form f(x) = (x+\frac{b}{2})^2-(\frac{b}{2} )^2+c

For the function presented f(x)=x^2 +12x+6 the result is as follows:

1) The value of b is 12

2) (\frac{12}{2} )^2=36

3) f(x)=(x^2+12x+36)-36+6

4)f(x)=(x+6)^2-36+6

Finally the function is:

f(x)=(x + 6)^2-30


The zero pair that must be added is 36 and -36


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Answer:

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Step-by-step explanation:

Remark

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Now the price is 7.75 that she has to pay for the 12 items. She wants to come back with 0 dollars.

0.5x + 0.75y = 7.75             Multiply this equation by 2

x + 1.5y = 15.50                    write the first equation underneath and subtract.

<u>x +    y =   12</u>

      .5y =  3                          Divide by 0.5

y = 3/0.5

y = 7

So she can get 7 cards.

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So she can buy 5 felt pads.

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