Mathematics (AS & A Level) · Oct / Nov 2020 · Paper 21 · Question 2
9709
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The polynomial px is defined by px = x3 + ax2 + bx + 16, where a and b are constants. It is given that x + 2 is a factor of px and that the remainder is 72 when px is divided by x −2 . Find the values of a and b. [5]
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