(1) Add: √7-√11 and √5-√11+ √13
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Step-by-step explanation:
(√7 - √11) + (√5 - √11+ √13)
= √7 - √11 + √5 - √11 + √13
= √7 - √11 - √11 + √5 + √13
= √7 - 2√11 + √5 + √13
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