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sierravick123owr441
02.09.2019 •
Mathematics
Rationalize the denominator 3-sqrt(6)÷4+sqrt(5)
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Ответ:
Step-by-step explanation:
You have written 3 - ((√6)/4) + √5. The only denominator is 4, which is already rational. If you were to use appropriate grouping symbols (parentheses) we might expect to see ...
(3 -√6)/(4 +√5)
The denominator is rationalized by taking advantage of the factoring of the difference of squares:
a² - b² = (a -b)(a +b)
The denominator will be rational if we can square the value √5. By choosing a multiplier of (4-√5), we can do that:
Ответ: