Rationalize the denominator 3-sqrt(6)÷4+sqrt(5)

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:

answer: all of the odd numbers were opened

the first person was the one that was opening all of the lockers. since one is odd, this causes all of the odd number lockers to be opened in the end.