write the expression (4x -2) x 6(2x+7) in the standard form of a quadratic expression ax^2 +bx + c
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4x-2*6(2x+7)
4x-2*12x+42
4x(12x+42)-2(12x+42)
48x^2+168x-24x-84
48x^2+144x-84
Dividing by 12 to both sides
3x^2+12x-7=o
Hope it help you
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