Question

resolve into factors: x⁴-1​

Answer 1

Answer:

( x- 1 ) ( x + 1 ) ( $x^{2}$ + 1 )

Step-by-step explanation:               FORMULA

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

= $(x^{2})^{2}$  --  $( 1 )^{2}$

= ( $x^{2}$ - 1 ) ( $x^{2}$ + 1 )

= ( x- 1 ) ( x + 1 ) ( $x^{2}$ + 1 )

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