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If (1 – x + x2)n = a0 + a1 x + a2 x2 +...+a2n x2n, then a0 + a2 + a4 +...+ a2n equals(a) 3n+12(b) 3n-12(c) 1-3n2(d) 3n+12

Answer» If (1 – x + x2)n = a0 + a1 x + a2 x2 +...+a2n x2n, then a0 + a2 + a4 +...+ a2n equals



(a) 3n+12



(b) 3n-12



(c) 1-3n2



(d) 3n+12


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