Solving By Quadratic Formula
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2chapter 8.2(a) solving by quadratic formula.notebook
April 27, 2016
Bellwork:
Homework Questions???
1) Write the equation of the line that passes through the points
(2, 3) and (4, 5).
2) Write the equation of the line perpendicular to the line in
equation #1 and passes through the point (4, 5).
2
3) Solve (3x 4)
= 12
2
4) What value would complete the square: x
+ 8x + ____ = 24
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Apr 209:42 AM
Quadratic Formula:
Chapter 8.2(a) Solving quadratic Equations by
the Quadratic Formula
2
If ax
+ bx + c = 0 and a ≠ 0, then
Solve quadratic equations by using the
quadratic formula.
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Apr 209:45 AM
Before we can use the quadratic formula we need to get the
1) Solve by using the quadratic equation
2
equation in standard form ax
+ bx + c = 0 and identify a, b,
and c.
2
2x
+ 9x + 10 = 0
2
1) 6x
= 9
Standard Form
Identify a, b, c
2
2) 2x
+ 8 9x = 0
Substitute values
Simplify (order of operations)
2
3) 7x 10 = 3x
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Apr 209:46 AM
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