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barxatty [35]
3 years ago
13

Prove: The square of a number that is two more than a multiple of 3 is one more than a multiple of 3.

Mathematics
1 answer:
xeze [42]3 years ago
8 0

Answer:

<u>To prove:</u>

  • (3x + 2)² is  3y + 1

<u>Expand the square:</u>

  • 9x² + 6x + 4 = (9x² + 6x + 3) + 1 = 3(3x² + 2x + 1)  + 1 = 3y + 1
  • Proven
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Answer:

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Given

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X = 7 + 3y
pogonyaev
<h3>Given Equation:</h3>

x = 7 + 3y

or, x - 3y - 7 = 0 ........ (i)

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or, 5x + 6y - 14 = 0 .........(ii)

<h3>To Find:</h3>

The value of x and y.

<h3>Solution:</h3>

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By adding eq. i and eq. iii, we get

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