anna8273 anna8273
  • 24-09-2020
  • Mathematics
contestada

I need help on this question!!

I need help on this question class=

Respuesta :

theleangreenbean
theleangreenbean theleangreenbean
  • 24-09-2020

Answer:

29

Step-by-step explanation:

We can use the formula (a+b)(a-b)=a^2-b^2 to help us simplify this problem.

[tex](6-\sqrt{7})(6+\sqrt{7})\\= 6^2-(\sqrt{7})^2\\= 36-7\\=29[/tex]

I hope this helps! Please comment if you have any questions.

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