<span>(y-4)(y+2)-(y-2)(y+4)</span>
<span>А)(5а-b)^2=25a</span>²-10ab+b²<span>
b)(y+6)^2=y</span>²+12y+36<span>
B)(5a-2)(5a+2)=25a</span>²-4<span>
Г)(x-0,6)(0,6+x)=x</span>²-0,36
(3(a-2b)^2)/(a-2b)(a+2b) = 3(a-2b)/(a+2b)
(a-2)^2/b(b^2+1)*(b^2+1)/(2-a) = -(a-2)/b
Находим производную :
Y = 2x-2
Приравниваем к нулю :
2x-2 = 0
2x=2
x=1
Y(1) = -2
Y(-1)=2
Ответ : 2