Graphing/Working with Quadratic Equations, algebra homework help

I need the problems on the 2 worksheets below solved with an explanation of how to do the type of problems found on each worksheet.

tic Formula
On the previous page. the exercises could be solved by factoring methods.
Some quadratic equations, however, cannot be solved by factoring. The
solutions to these equations may be fractions, and may contain square
roots
EXAMPLE
04/24/2012
Periodlo
Salve: 2x + x – 2 = 0
Substitute a = 2.5 -1,C= -2
(1) EV (I) – 4123–21
242)
-It V1 + 16
4
1+ v17 -1-V17
4
22
PRACTICE
Use the quadratic formula to solve each quadratic equation.
att barac-2
b
1.fr – 2x – 2 = 0
20+ – 8x + 3-0
2×2 + 3x – 1 = 0
2 I JEZ) 24/1) (-2)
201)
=2.73 tr XB
2. 3×2 – 4x – 2 – 0
6x = 5x + 3
5x = 3x + 1
574 – 3 – 31
3. ar srl
2x + 5x = 1
159
Write the equation of the axis of symmetry, and find the coordinates of the vertex
of the graph of each function. Identify the vertex as a maximum or minimum.
Then graph the function.
5. y = 2×2
6. y = x2 – 2x = 6
7. y = –x2 + 4x
4Y
y У
+y
o
10
ol
8. y = -x2 – 2x + 2
9. y = 2×2 + 4x – 2
10. y = – 2x – 4x + 6
Y
0
x
Jo
ol
581
Glencoe Algebra 1
Glencoe/McGraw-Hill