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myllena10geezer
@myllena10geezer
August 2022
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a) (2x-1).(3x+2)=
??
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Heverton3D
(2x-1) x (3x+2) = 6x²+4x-3x-2 ⇒ 6x²+x-2
Δ=√ 1-4x6x-2
Δ= √ 1+ 48
Δ= √49
Δ= 7
-1 +/- 7 -1 + 7 1
------------ ⇒ ----------- ⇒ ---------
2x6 12 2
-1 - 7 -8 -2
----------- ⇒ ----------- ⇒ ---------
12 12 3
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Δ=√ 1-4x6x-2
Δ= √ 1+ 48
Δ= √49
Δ= 7
-1 +/- 7 -1 + 7 1
------------ ⇒ ----------- ⇒ ---------
2x6 12 2
-1 - 7 -8 -2
----------- ⇒ ----------- ⇒ ---------
12 12 3