1) а)-64=(b-8)(b+8)
б) 1-81=(1-9)(1+9)=
=(1-3)(1+3)(1+9)
2)
4) =0
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Answers & Comments
1) а)
-64=(b-8)(b+8)
б) 1-81
=(1-9
)(1+9
)=
=(1-3
)(1+3
)(1+9
)
2)
4)
=0