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adelina 88 [10]
3 years ago
14

Help please!! will give brainiest :))

Mathematics
2 answers:
jeyben [28]3 years ago
7 0

Answer:

81(x + 2y)(x - 2y)

Step-by-step explanation:

81 {x}^{2}  - 324 {y}^{2}  \\  \\  =  {(9x)}^{2}  -  {(18y)}^{2}  \\  \\  = (9x + 18y)(9x - 18y) \\  \\  = 9(x + 2y) \times 9(x - 2y) \\  \\  = 81(x + 2y)(x - 2y)

Kitty [74]3 years ago
3 0
<h2><u><em /></u></h2><h2><u><em> -98415 is the answer because im smart</em></u></h2>
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Help please, question attached
Alexxandr [17]

Answer:

C. x = 8

Step-by-step explanation:

We know that x · x · x is equal to 512. We know it cannot be negative because then the 512 would be negative. -2 x -2 x -2 is -8. -2 x -2 is 4. We know it cannot be B x = -6 or D. x = -8.

Let's multiply 6 x 6 x 6.

                           36 x 6 = 216.

Let's multiply 8 x 8 x 8.

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The answer would be C. x = 8.

I hope that this helps! :)

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Aleks [24]

Answer: A and c

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Answer:

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Step-by-step explanation:

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