Ответ:
Объяснение:
6.
[tex]1001^2=(1000+1)^2=1000^2+2*1000*1+1^2=1000000+2000+1=1002001.\\999^2=(1000-1)^2=1000^2-2*1000*1+1^2=1000000-2000+1=998001.[/tex]
7.
[tex]y=(2x-\frac{1}{4} )^2-(2x+0,25)^2-1=(2x-0,25 )^2-(2x+0,25)^2-1=\\=(2x-0,25+2x+0,25)*(2x-0,25-2x-0,25)-1=\\=4x*(-0,5)-1=-2x-1.\\y=-2x-1.\\ x\ |\ \ 0\ \ \ | -1\ \ |\\y\ |-1\ |\ \ \ 1\ \ \ |.[/tex]
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Answers & Comments
Ответ:
Объяснение:
6.
[tex]1001^2=(1000+1)^2=1000^2+2*1000*1+1^2=1000000+2000+1=1002001.\\999^2=(1000-1)^2=1000^2-2*1000*1+1^2=1000000-2000+1=998001.[/tex]
7.
[tex]y=(2x-\frac{1}{4} )^2-(2x+0,25)^2-1=(2x-0,25 )^2-(2x+0,25)^2-1=\\=(2x-0,25+2x+0,25)*(2x-0,25-2x-0,25)-1=\\=4x*(-0,5)-1=-2x-1.\\y=-2x-1.\\ x\ |\ \ 0\ \ \ | -1\ \ |\\y\ |-1\ |\ \ \ 1\ \ \ |.[/tex]