So since the vertex falls onto the axis of symmetry, we can just solve for that to get the x-coordinate of both equations. The equation for the axis of symmetry is 
, with b = x coefficient and a = x^2 coefficient. Our equations can be solved as such:
y = 2x^2 − 4x + 12: 
y = 4x^2 + 8x + 3: 
In short, the vertex x-coordinate's of y = 2x^2 − 4x + 12 is 1 while the vertex's x-coordinate of y = 4x^2 + 8x + 3 is -1.
<h3>The volume of cube is 729 cubic centimeter</h3>
<em><u>Solution:</u></em>
<em><u>The surface area of cube is given as:</u></em>
Where, "a" is the length of side of cube
Given that, surface area = 486 square centimeter
<u><em>Find the volume of cube:</em></u>
Thus volume of cube is 729 cubic centimeter
(x^2-1)(x^2+7) should be your answer
Answer:
the second one
Step-by-step explanation:
The answer is 0.0190114068441065
