write the cofficent of x2in te expansion of (x-2)3
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expansion of it is x^3-8-6x(x-2)
=x^3-8-6x^2+12x
x^2 coffecient is -6
=x^3-8-6x^2+12x
x^2 coffecient is -6
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the expantion of (x-2)³ is
x³ - 3x²(2) + 3x2² -2³
= x³ - 6x² + 12 x -8
The coefficient of x² is -6
x³ - 3x²(2) + 3x2² -2³
= x³ - 6x² + 12 x -8
The coefficient of x² is -6
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