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(4 marks) 2. (a) The expression f(x) = 23 + ax2 + bx - 3, . where a and b are constants, has a factor

(4 marks) 2. (a) The expression f(x) = 23 + ax2 + bx - 3, . where a and b are constants, has a factor of x - 3 and leaves a remainder of 15 when divided by x + 2. i. Find the values of a and b. (3 marks ii. Solve completely, f(x) = 0. (3 marks

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