Question

Divide polynomial remainder sums standard 9​

Answer 1

HERE IS YOUR ANSWER

$p(x) = {x}^{2} - 10x + 21 \\ {x}^{2} - 10x + 21 = 0 \\ {x}^{2} - 7x - 3x + 21 = 0 \\ x(x - 7) - 3(x - 7) = 0 \\ (x - 7)(x - 3) = 0 \\ \\ x - 3 = 0 \\ x = 3 \\ \\ x - 7 = 0 \\ x = 7$

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