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user100 [1]
3 years ago
5

Work out (2+√3)(2−√3)

Mathematics
2 answers:
Doss [256]3 years ago
6 0

Answer:

1

Step-by-step explanation:

Given

(2 + \sqrt{3} )(2 - \sqrt{3} ) ← expand factors using FOIL

= 2² - (\sqrt{3} )²

= 4 - 3

= 1

Nata [24]3 years ago
6 0
Work out
(2+√3)(2−√3)

=1
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In how many ways can you spell the word ROOM in the grid below? You can start on any letter R, then on each step you can step on
Zina [86]

Answer:

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Step-by-step explanation:

In a straight line, the word can only be spelled on the diagonals, and there are only two diagonals in each direction that have 2 O's.

If 90° and reflex turns are allowed, then the number substantially increases.

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Then paths accessible from the top row of R's are 3 +10 +16 +10 +3 = 42 paths. There are two such rows of R's so a total of 84 paths.

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3 years ago
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olya-2409 [2.1K]

Answer:

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Step-by-step explanation:

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Parenthesis

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