1.
Today:
STAR Math Progress
Class Notes; ax2
+ bx + c trinomials,
Linear vs. Quadratic Equations
Test: Factoring Quadratic Expressions
March
31
2.
Today's Test:
GCF, Grouping, x2
+ bx + c
trinomials, Perfect Square
Trinomials/Special Products
Class Notes; Not on today's test, but next test
ax2
+ bx + c trinomials,
Linear vs. Quadratic Equations
Test: Factoring Quadratic Expressions
3.
Class Notes:
2. (4x2
+ 44x + 121)
Part I of our 3rd quarter final will be on new material,
including ax2
+ bx + c trinomials.
Part II will cover all other 3rd quarter concepts.
1. 4x2 – 9y6
3. 21x2 – 41x + 10
The Possible factors of 21x2 are what?
Since our signs are -, +, possible factors of 10 must both be
negative, and are....
When a•c results in a large number, we can
mix and match factors of a and c, until we
find a pair that works.
{x, 21x} or {3x, 7x}
{-1, -10} or {-2, -5}.
Try different combinations until one pair equals the original
trinomial. The correct factorization is... (3x – 5)(7x – 2)
Diff. of squares PST
4.
Class Notes:
Once more, 35x2 + 2x - 24 Our signs will be... ( ) ( )+ -
Possible factors of 35x2 are {x, 35x} or {5x, 7x}
The factors of 24 could have either sign, so both must be
tested. (1, -24) or (-1, 24) (2, -12) or (-2, 12), etc.
Since the middle term is a small number, the factors must
be close to each other. Remember this important point.
5.
Class Notes:
Linear vs. Quadratic Equations
1. Write a Linear Equation, any linear equation
2. Write the Linear Equation in both standard and slope-
intercept form. Fill in the blank: (In your notebook)
3. The highest degree of any linear equation is _______.
The angle of the line depends on the _______, and every
linear equation results in a ________ line.
1
slope
straight
4. Write the equation
of the given line
6.
Quadratic Equations: (Write this down)
Class Notes:
1. Have a highest degree of 2.
2. Have a standard form of: ax2 + bx + c = 0
3. Have a graph which always results in a parabola.
4. Have solutions which
show the x intercept(s)
Last question for today:
Solve: x2 + 3x - 4 = 0
(x ) (x ) = 0+ -4 1
x = (-4, 1)
7.
Take 5, then we'll begin the test
You will need:
Your correct code, pencil only, no
phones., scratch paper
Prayers, lots of prayers
You can use a regular calculator, but one is
not necessary for this test.
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