x3-3x2y+y2x-y3-2x2-y3
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(x + y)3 = x3 + 3x2y + 3xy2 + y3 = x3 + y3 + 3xy (x + y) ... If x + 1 is a factor of the polynomial 2x2 + kx, then the value of k is. (A) –3. (B) 4.
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