NuzhahCj NuzhahCj
  • 20-01-2022
  • Mathematics
contestada

Use suitable identity and find the product of:
(2a-7)(2a-7)

Respuesta :

Аноним Аноним
  • 20-01-2022

[tex]\\ \sf\longmapsto (2a-7)(2a-7)[/tex]

[tex]\\ \sf\longmapsto (2a-7)^2[/tex]

  • (a-b)^2=a^2+b^2-2ab

[tex]\\ \sf\longmapsto 2a^2-2(2a)(7)+49[/tex]

[tex]\\ \sf\longmapsto 4a^2-28a+29[/tex]

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