Mathematics: Will give brainliest need asap you 3

Will give brainliest need asap you 3

Ответ:

jphelps19992019

16.01.2022

your answer is correct

Step-by-step explanation:

When a relation has an input that maps to more than one output, it is not a function. Both 6 and 12 map to two different outputs, so the relation is not a function. Your answer choice is correct.

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Ответ:

dolphin5836

05.05.2021

Mathematics

It can't be expressed in that form

Step-by-step explanation:

From difference of two squares:

${ \boxed{(a + b)(a - b) = ( {a}^{2} - {b}^{2} )}}$

a » 9

b » 2i

$(9 + 2i)(9 - 2i) = \{ {(9)}^{2} - {(2i)}^{2} \} \\ \\ = (81 - 4 {i}^{2} )$

but i² is -1 [ complex numbers ]

$= \{81 - 4( - 1) \} \\ = 81 + 4 \\ = 85$

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Will give brainliest need asap you < 3

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