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Please help me who knows how to do this

Please help me who knows how to do this-example-1
User BArtWell
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X^2 - x - 12

Step 1: X^2+3x-4x-12

Step 2: (X^2+3x)+(-4x-12)

Step 3: X(x+3)-4(x+3)

Answer: (x-4)(x+3)
User Tyler Murry
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