Question

$- sqrt{210- 10sqrt{440} } - sqrt{231- 11sqrt{440} }$

Answer 1

$- sqrt{210-10 sqrt{440} } - sqrt{231-11 sqrt{440} } =- sqrt{(10+ sqrt{110} )^{2}} - \ sqrt{(11- sqrt{110})^{2} } =-10- sqrt{110} -11+ sqrt{110} =-21$

Answer 2

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