2 years ago

Will give brainliest

Mathematics

1 answer:

Serggg [28]2 years ago

8 0

Answer:

whats (2x)x(76) x is 50 btw im new

Step-by-step explanation:

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$
1.
(2^{x} -2^{-x})^{2} = 4^{2} \\ \\2^{2x}-2*2^{x}*2^{-x} + 2^{-2x} =4^{2} \\ \\2^{2x}-2*2^{x-x} + 2^{-2x} =4^{2} \\ \\ 2^{2x}+ 2^{-2x} - 2=16 \\ \\ 2^{2x}+ 2^{-2x} = 18

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$

$\\ \\ ( 2^{x})^{3} - (2^{-x})^{3} =(4)((18)+1)= 76
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$

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3 years ago

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3 years ago

Read 2 more answers