Какая то охенея получаеться
1.
а) = у^2-4y+4+1+4y+4y^2=5y^2+5
б) = 49-64x^2
в) = a^3-8
г) = 27a^3+27a^2+9a+1
2.
a) = (6a+1)^2
б) = (10x-7y)(10x+7y)
в) = (5x-2y)*(25x^2+10xy+4y^2)
г) = (y-1)(y+1)(y^2-y+1)
<span>Sin(x+π/4)=1/2
x+</span>π/4=π/6+2πk U x+π/4=5π/6+2πk
x=-π/4+π/6+2πk U x=-π/4+5π/6+2πk
x=-π/12+2πk U x=7π/12+2πk,k∈z