ranjushrestha1122
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  • 23-03-2021
  • Mathematics
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If m = (3x-1) and n = (3x+1),sjow that x² = mn+1 by 9​

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Аноним Аноним
  • 23-03-2021

Step-by-step explanation:

[tex] {x}^{2} = \frac{mn + 1}{9} [/tex]

[tex](3x - 1)(3x + 1)[/tex]

[tex]9 {x}^{2} - 1[/tex]

[tex] {x}^{2} = \frac{9 {x}^{2 } - 1 + 1 } {9} [/tex]

[tex] {x}^{2} = \frac{9 {x}^{2} }{9} [/tex]

[tex] {x}^{2} = {x}^{2} [/tex]

So this identity is true.

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