Do not use a graphic calculator in answering this question. By considering the cases $x$\left( 10-x

Question

Do not use a graphic calculator in answering this question. By considering the cases $x$\left( 10-x \right)\left( 10-\left| x \right| \right)>11$, giving your answers in exact form.[5]

Accepted Answer

$-\sqrt{89} 10+\sqrt{11}$

2013 ACJC P1 Q1

2013 ACJC P1 Q1

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