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14. Calculati a) (x-5)(x+5)(x²+25); c) (2x-1)(1 + 2x)(4x² + 1); b) (x-4)(x+4)(x² + 16); d) (3x+2)(2-3x)(4+9x²). ​
URGENT, DAU COROANA


Răspuns :

Răspuns:

a)

[tex]( {x}^{2} - 25)( {x}^{2} + 25) = x^{4} - 625[/tex]

c)

[tex](4 {x}^{2} - 1)(4 {x}^{2} + 1) = 16 {x}^{4} - 1[/tex]

b)

[tex]( {x}^{2} - 16)( {x}^{2} + 16) = {x}^{4} - 256[/tex]

d)

[tex](4 - 9 {x}^{2} )(4 + 9 {x}^{2} ) = 16 - 81 {x}^{4} [/tex]