<span>The first part of the quadratic formula, x = - b/2a, is the equation of the axis of symmetry, and the x-coordinate of the vertex. </span>
<span>In standard form: - 2x² + 8x - 5 = 0, a = - 2, b = 8, c = - 5 </span>
<span>The axis of symmetry: x = - 8/2(- 2) = - 8/- 4 = 2 </span>
<span>Go back and solve for y to find the y-coordinate of the vertex. </span>
<span>y = - 2(2)² + 8(2) - 5 </span>
<span>y = - 2(4) + 16 - 5 </span>
<span>y = - 8 + 16 - 5 </span>
<span>y = 3 </span>
<span>Vertex is (2, 3)</span>
Answer:
B -5, and 5
Step-by-step explanation:
you can't have zero on the bottom
4.5x67=301.7
6/5x78=63.6
20-100+3000=2920
Answer:
sure?
Step-by-step explanation:
(3x^3+2x^2-5x) -(8x^3-2x^2)
-5x^3 -5x is the answer, there's not really any work to show, just subtract.
