factorize the following
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✒..
1) 3x²+3x-1x-1
➡ 3x(x+1)-1(x+1)
➡ (x+1)(3x-1)
2) 12x²-4x-3x+1
➡ 4x(3x-1)-1(3x-1)
➡ (3x-1)(4x-1)
3) x²-4x+2x-8
➡ x(x-4)+2(x-4)
➡ (x-4)(x+2)
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first you improve your handwriting
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