Seudónimo Seudónimo

23-05-2022
Mathematics

contestada

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

Respuesta :

2wf7xpi65t 2wf7xpi65t

23-05-2022

The answer should be 31.20 :)

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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

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