Question

If both a and b are rational numbers find the value of and b in each of following equalities
$\sqrt{5} + \sqrt{3} \div \sqrt{5} - \sqrt{ 3} = a + b \sqrt{15}$
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Answer 1

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Answer 2

Step-by-step explanation:

When one body rolls over the surface of another body, the resistance to Its motion is called rolling friction. Rolling reduces friction. It is always easier to roll than to slide a body over another. That is the reason it is convenient to pull luggage fitted with rollers. Can you now understand why the wheel is said to be one of the greatest inventions of mankind?

When one body rolls over the surface of another body, the resistance to Its motion is called rolling friction. Rolling reduces friction. It is always easier to roll than to slide a body over another. That is the reason it is convenient to pull luggage fitted with rollers. Can you now understand why the wheel is said to be one of the greatest inventions of mankind?Since the rolling friction is smaller than the sliding friction, sliding is replaced in most machines by rolling by the use of ball bearings. Common examples are the use of ball bearings between hubs and the axles of ceiling fans and bicycles