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Iteru [2.4K]
3 years ago
8

Algebra need to solve question

Mathematics
1 answer:
Zigmanuir [339]3 years ago
4 0

Answer:

2

Step-by-step explanation:

(3+\sqrt{7})(3-\sqrt{7}) \\

First do 3 x 3 = 9 - keep this 9 to the side for now

Then do 3 x -\sqrt{7} = -\sqrt{21} - also keep this to the side for now

Then do \sqrt{7} x 3 = \sqrt{21}

Then do -\sqrt{7} x \sqrt{7} = -7

So,

9 -\sqrt{21} + \sqrt{21} - 7

Therefore, 9-7 = 2

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Answer:

x = -2

Step-by-step explanation:

For this problem, we must simply solve for x.  To do this, we will need equation operations, and the use of the distributive property.

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Answer:

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Step-by-step explanation:

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