funderburk41 funderburk41

03-10-2016
Mathematics

contestada

vertex form of
y=x^2-4x-9

Respuesta :

apologiabiology apologiabiology

03-10-2016

complete the square
first isolate x terms
y=(x^2-4x)-9
complete square inside (take 1/2 of square of b )
-4/2=-2, (-2)^2=4
add 4-4 inside
y=(x^2-4x+4-4)-9
complete the square
y=((x-2)^2-4)-9
y=(x-2)^2-4-9
y=(x-2)^2-13

Answer Link

Otras preguntas

the law of cosine is c2 = a2 + b2 – 2ab cos C. find the value of 2ab cos C

Evaluate the function fx = 4 * 7^t for x= -1 and x=2

mo•bile (mō′bəl for adj; mō′bēl′ for noun) [ME mobyll < L mobilis, to move; 1480–90] 1 adj. easy to move; movable: Several mobile homes were damaged by the s

Between 1950 and 2010, more than _____ children died before age 5.

which statement correctly describes an atom of the element helium

If the reserve ratio is 12.5 percent, then $1,000 of additional reserves can create up to

Who is the founder of the phone?

Find the coordinates of the intersection of the diagonals of parallelogram WXYZ with the following vertices: W (-1, 7), X (8, 7), Y (6, -2) and Z (-3, -2)

NEED HELP FAST!!!!!!! Ella is faced with a decision about smoking cigarettes while visiting family members who all smoke. Which area(s) of her health could be a

What is the equation of the line perpendicular to y=3x+2 that passes through the point (0, 2)?