3 years ago

Solve for x 1/2x=-9. A-x=18 B-x=4 1/2 C-x=-18

Mathematics

1 answer:

zhannawk [14.2K]3 years ago

7 0

It would be x=-18. I hope I helped you

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melisa1 [442]

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Vertex form: $f(x) =(x +\frac{7}{2})^2 -\frac{53}{4}$

The vertex is $(-\frac{7}{2},-\frac{53}{4})$

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For a general quadratic function the form is:

$ax ^ 2 + bx + c$

For the function

$f(x) = x ^ 2+ 7x -1$

The values of the coefficients for the function are the following: $a = 1$ , $b =7$ , $c = -1$

Take the value of b and divide it by 2. Then, the result obtained squares it.

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Add and subtract $\frac{49}{4}$

$f(x) = (x ^ 2 +7x +\frac{49}{4}) -\frac{49}{4}- 1$

Write the expression of the form

$f(x) = (x+\frac{b}{2})^2 +k$

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The vertex is $(-\frac{7}{2},-\frac{53}{4})$

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