Sunday

February 1, 2015

February 1, 2015

Posted by **Jake** on Thursday, April 22, 2010 at 8:19pm.

- college algebra -
**Reiny**, Thursday, April 22, 2010 at 9:50pmwe could complete the square

f(x)=x^2+6x+5

= x^2 + 6x + 9 - 9 + 5

= (x+3)^2 - 4

so the vertex is (-3,-4), so you were right

short-cut way:

the x of the vertex is -b/(2a) = -6/2 = -3

f(-3) = 9 - 15 + 5 = -4

**Answer this Question**

**Related Questions**

college algebra - find the vertex f(x)=3x^2-6x+8 I have an answer of -1 and 17 I...

college algebra - what is the x value of the vertex f(x)=x^2+6x+5 my answer is -...

Algebra - Identify the vertex and the axis of symmetry for the graph of y=5(x-2...

Algebra - Find the vertex of the functions given below. 1. y=(x-4)(x+2) 2. y=2x^...

college algebra - find the vertex of f(x)=3x^2-6x+8 i have an answer of (1,-5) ...

college algebra - find the vertex of f(x)=3x^2-6x+8 i have an answer of (1,-5) ...

Algebra - Write an equation for the translation so the graph has the given ...

Algebra - How do you get the vertex of this absolute value? y = -2 |4x - 1| + 16...

Algebra 2 - Hey I am working on math homework that involves "Standard Form to ...

algebra(reiny) - Hey thanks for all your help but you kinda confused me on a few...