The polynomial f(x) = x^4 − 2x^3 + 3x^2 − ax + b when divided by (x – 1) and (x + 1) leaves the remainders 5 and 19 respectively. Find the values of a and b. Hence find the remainder when divided by (x – 3).
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Valency is the combining power of an element. Elements in the same group of the periodic table have the same valency. The valency of an element is related to how many electrons are in the outer shell. Group number. 1.
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