Answer:

Step By Step Explanation:
Apply Rule - (-a) = a

Multiply: 4 · 6 = 24

Expand 
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Simplify 
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━ Mordancy ━
Answer:
Step-by-step explanation:
hello :
f(x) = a(x - h)²-k ....vertex form when the vertex is : (h,k)
h=1 and k=0 so : f(x) = a(x-1)²
a parabola that passes through the point (2,8) : f(2)=8
a(2-1)² =8
a= 8
f(x) = 8(x-1)²= 8(x²-2x+1)
f(x) 8x²-16x+8 .....standard form
Answer:
24.8
Step-by-step explanation:
x = √(16)^2+(19)^2= 24.8
Second one is the correct answer