derive quad form
DESCRIPTION
The quadratic formula is derivedTRANSCRIPT
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Derive the Quadratic Formula
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2 0ax bx c c c
2ax bx c 2 b
a x x ca
2 ba x x c
a
212ba
2
24ba
2
24ba
2
24ba
a
2 2
2 4b b
a x ca a
2
4ba
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2 2
2 4b b
a x ca a
a a2 2
22 4b b c
xa aa
The LCD is 4a2
2 2
2 2
42 4 4b b ac
xa a a
2
2
44
b aca
Same Denominator
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2 2
2
42 4b b ac
xa a
2
2
42 4b b ac
xa a
2 42 2b b ac
xa a
2ba
2ba
2 42 2b b ac
xa a
2 42
b b acx
a
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2 0ax bx c
2 42
b b acx
a
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26 7 2 0x x a b c
2 4
2x
76 276
7 49 4812
x
7 1
12x
7 112
x
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7 112
x
7 112
x
6
12
1
2
7 112
x
8
12
2
3