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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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What is the solution to the following system of equations?
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Answer:

(0, -6)

Step-by-step explanation:

Given the following systems of linear equations;

3x - 2y = 12 ...... equation 1

16x - 4y = 24 ........ equation 2

We would solve for the solution using the elimination method;

Multiplying eqn 1 by 2, we have;

2 * (3x - 2y = 12)

6x - 4y = 24

16x - 4y = 24

Subtracting the two equations, we have;

(6x - 16x) + (-4y -[-4y]) = (24 - 24)

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Next, we would find the value of y;

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Check:

3x - 2y = 12

3(0) - 2(-6) = 12

0 - (-12) = 12

12 = 12

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