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Sphinxa [80]
3 years ago
9

I solved some of it but now I don't know if you continue it correctly ... To be performed: (lesson: Raducali of order "n")

Mathematics
2 answers:
Jet001 [13]3 years ago
7 0

Answer:

( \sqrt[4]{7}  + 2)( \sqrt[4]{7}  - 2)( \sqrt[4]{7}  + 4) \\ (first \: two \: is \: in \: the \: form \: of \: (x + y)(x - y)  =  {x}^{2}  -  {y}^{?} \\ then { \sqrt[4]{7} }^{2}  -  {2}^{2}  \\  =(  \sqrt{7}  - 4) \\ so \: ( \sqrt{7}  - 4)( \sqrt{7}  + 4) \\  =  { \sqrt{7}  }^{2}  -  {4}^{2}  \\  = 7 - 16 \\  =  - 9 \\ thank \: you

nikitadnepr [17]3 years ago
5 0

Answer:

-9

Step-by-step explanation:

( \sqrt[4]{7}  + 2)( \sqrt[4]{7}  - 2)( \sqrt{7}  + 4) \\  = ( { \sqrt[4]{7} }^{2}  - {{2} }^{2} )( \sqrt{7}  + 4) [because (a+b)(a-b) = a² - b²]\\  = ( \sqrt{7}  - 4)( \sqrt{7}  + 4) \\  =   { \sqrt{7} }^{2}  -  {4}^{2}[because (a+b)(a-b) = a² - b²]  \\  = 7 - 16 \\  =  - 9

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