Seudónimo Seudónimo
  • 23-05-2022
  • Mathematics
contestada

[tex](7-\sqrt{2}) (7-\sqrt{2})[/tex]
I NEED HELP PLEASE

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2wf7xpi65t
2wf7xpi65t 2wf7xpi65t
  • 23-05-2022
The answer should be 31.20 :)
Answer Link
Аноним Аноним
  • 23-05-2022

Answer:

51 - 14√2

Step-by-step explanation:

Identity used :

  • (a - b)(a - b) = (a - b)² = a² - 2ab + b²

Solving :

  • (7 - √2)(7 - √2)
  • (7 - √2)²
  • (7)² - 2(7)(√2) + (√2)²
  • 49 - 14√2 + 2
  • 51 - 14√2
Answer Link

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