Expand and simplify 3(x+4) - 2(4x+1)

3(x+4) - 2(4x+1)= 3x + 12 - 8x + 2= 3x - 8x + 12 - 2= -5x + 10

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Write x^2+4x-12 in the form (x+a)^2+b where a and b are constants to be determined.


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