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Simplify1) (5+√7) (2+√5)2) (5+√5) (5-√5) |
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Answer» Answer: 20 Step-by-step EXPLANATION: (5+√5) (5-√5) = 5(5-√5) + √5(5-√5) = (5×5) - 5√5 + 5√5 - (√5 - √5) = 25 - 5√5 + 5√5 - 5 = 25 - 5 = 20 Hence (5+√5) (5-√5) = 20 Hope it is HELPFUL. |
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