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Anna11 [10]
3 years ago
7

I need urgent help with the question. Can someone please give full working out of the attached question

Mathematics
1 answer:
Bumek [7]3 years ago
8 0

Answer:

2x-2

Step-by-step explanation:

Being specifically asked to rationalise the denominator we focus on it as required.

To rationalise a term it has to be multiplied by its inverse.

The inverse of

\sqrt{x}  -  \sqrt{2 - x}

is

\sqrt{x}  +  \sqrt{2 - x}

Multiplying this two vives us a difference of two squares

{( \sqrt{x} })^{2}  -  {( \sqrt{2 - x} )}^{2}

which gives us

x-(2-x)

=2x-2

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Answer:

Step-by-step explanation:

Rational numbers;

Numbers which can be written in the form of \frac{p}{q} or repeating decimal numbers are the rational numbers.

Examples : 1, 2, \frac{2}{3}

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Numbers which can't be written in he form of a fraction or non repeating decimal numbers are the Irrational number.

Example: \sqrt{8},\pi,\sqrt{\frac{8}{21} }

From the given numbers,

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Step-by-step explanation:

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<h2>Answer:</h2>

The surface area of a shape is the sum of the area of all of its faces. To find the area of a cylinder, you need to find the area of its bases and add that to the area of its outer wall. The formula for finding the area of a cylinder is A = 2πr2 + 2πrh.

<h2>Step-by-step explanation:</h2>
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