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CD School House 9
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CD School House 9.0 - Wayzata Technology (1994).iso
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precalc1
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alg002.hlp
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Text File
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1994-03-05
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1KB
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38 lines
Review of Factoring
▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀▀
You MUST have all the following information at your fingertips at all times.
You have NO CHANCE of passing Calculus without it.
ax + ay = a(x + y)
2 2
a - b = (a - b)(a + b)
2
x + (a + b)x + ab = (x + a) (x + b)
2 2 2
x + 2ax + a = (x + a)
3 3 2 2
a - b = (a - b) (a + ab + b )
Notice, in this last identity, what happens if "b" is replaced by "-b".
┌─────────────────┐
│ Common Mistakes │
└─────────────────┘
2 2 2 2 2
WRONG x - y = (x - y) RIGHT x - y = (x - y)(x + y)
This is the end of the help file. Press the ESC key to return to the quiz
question you were doing.