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angel13999
@angel13999
August 2022
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Kolion
№1
а.) 3√5 = √9*5 = √45
б.) 5√7 = √25*7 = √175
в.) 5√8/5 = √25*8/5 = √5*8 = √40
г.) 1/4√48 = √1/16*48 = √1*3 = √3
№2
2√27 + 4√48 - 1/5√75 - 9√3 = 6√3 + 16√3 - √3 - 9√3 = 12√3
№3
а.) (3-в²)/(√3+в) = ((√3-в)(√3+в))/(√3+в) = √3-в
б.) (3+√в)/(в-9) = (3+√в)/((√в-3)(√в+3)) = 1/(√в-3)
в.) (9у² + 6у√в + в)/(3у+√в) = ((3у + √в)²)/(3у + √в) = 3у+√в
№4
а.) √0,25*64 = √16 = 4
б.) √56 * √14 = √56*14 = √784 = 28
в.) √8/√2 = √8/2 = √4 = 2
г.) (3√2-2)*(4√2+7)-13√2 = 24 + 21√2 - 8√2 - 14 - 13√2 = 10
№5
((в - 2√в +1)/(1-√в)) + ((в-1)/(1-√в)) + 2√в = ((2в - 2√в)/(1-√в)) + 2√в = (2в - 2√в + 2√в - 2в)/(1-√в) = 0
№6
Еще подумаю
3 votes
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Answers & Comments
а.) 3√5 = √9*5 = √45
б.) 5√7 = √25*7 = √175
в.) 5√8/5 = √25*8/5 = √5*8 = √40
г.) 1/4√48 = √1/16*48 = √1*3 = √3
№2
2√27 + 4√48 - 1/5√75 - 9√3 = 6√3 + 16√3 - √3 - 9√3 = 12√3
№3
а.) (3-в²)/(√3+в) = ((√3-в)(√3+в))/(√3+в) = √3-в
б.) (3+√в)/(в-9) = (3+√в)/((√в-3)(√в+3)) = 1/(√в-3)
в.) (9у² + 6у√в + в)/(3у+√в) = ((3у + √в)²)/(3у + √в) = 3у+√в
№4
а.) √0,25*64 = √16 = 4
б.) √56 * √14 = √56*14 = √784 = 28
в.) √8/√2 = √8/2 = √4 = 2
г.) (3√2-2)*(4√2+7)-13√2 = 24 + 21√2 - 8√2 - 14 - 13√2 = 10
№5
((в - 2√в +1)/(1-√в)) + ((в-1)/(1-√в)) + 2√в = ((2в - 2√в)/(1-√в)) + 2√в = (2в - 2√в + 2√в - 2в)/(1-√в) = 0
№6
Еще подумаю