(x-4)(x+2)2
4-x=3x
2+x=4x
3x-4x=1x
Ответ:1x
А) (а-4)²-а(2а-8)= а²-8а+16-2а²+8а=16-а²
б) х∧6*х∧4÷х² = х∧10 ÷х²=х∧8
В числителе а(а-2b),в знаменателе -b(a-2b), зачеркиваешь (a-2b), а остатки переписываетесь
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[-6]------------[-2]------------------(4)---------------------(6)-
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[-6;4)∩[-2;6)=[-2;4)
(-2+4)/2=1
Окрестность 1
Радиус равен |4-(-2)|/2=6/2=3
(-27)*(m-y+p)=-27m+27y-27p