Hi,

Finding vertex form of:

h = -5t^2+20t+105      |Completing the Square

h = -5(t^2 - 4t)   + 105     |Note:   t^2 -4t + 4 = (t-2)^2 

h= -5(t-2)^2 + 20 + 105

h=  -5(t-2)^2 + 125   V(2,125) 

RELATED QUESTIONS

How do you turn a quadratic equation into a vertex... (answered by stanbon)

how do you turn the vertex form; y=4(3x-1)^2+8 back into standard... (answered by math_tutor2020)

How do you change the equation "2(x-1)(x+6)" into vertex... (answered by Fombitz)

How do you turn slope intercept into standard form?
 (answered by checkley77)

How do you the parabola y=4x^2-12x+5 into vertex form and intercept... (answered by Fombitz)

How do you solve by hand? 
h(t)= -16t^2 +20t... (answered by richard1234)

Can you turn this equation into the form of ax+b=y ;

3x+6y=15

Thank... (answered by checkley79)

how do you turn 10^-2 into a... (answered by Fombitz)

A stone is thrown straight up from the ground. The height above the ground, h(t) metres... (answered by macston)