Question

simlify the following:(8+✓5)(8-✓5)​

Answer 1

Answer:

$(8 + \sqrt{5} )(8 - \sqrt{5} ) = \\ \\ \\ \\ you \: know \: ... \\ \\ ( x - y)(x + y) = {x}^{2} - {y}^{2} \\ \\ \\ \\ \\ (8 + \sqrt{5} )(8 - \sqrt{5} ) = {8}^{2} - { \sqrt{5}}^{2} \\ \\ \\ = = > > 68 - 5 = 63$

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Answer 2

Answer:

(8+✓5)(8-✓5)

using the formula a^2-b^2

(a+b)(a-b)

(8)^2-(✓5)^2

64-5

59 is your answer

Step-by-step explanation:

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