Find area of the isosceles triangle formed by the vertex and the x-intercepts of parabola y=x^2-4x+21.

what is the answer?

16 is the absolute value

step-by-step explanation:

i will with my problems and all the other things that need to   be on by the way

step-by-step explanation:

perimeter = 10 +  √10  units

explanation:

first, we will need to get the length of each line using the distance formula which is as follows:

distance = 

1- length of ab:

ab =   = 5 units

2- length of ac

length of ac is the same as ab = 5 units

3- length of bc:

bc =   =  √10  units

now, we can get the perimeter by adding the side lengths as follows:

perimeter = 5 + 5 +  √10

perimeter = 10 +  √10  units

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