1)y^5-25y^3=y^3(y^2-25)=y^3(y-5)(y+5)
2)16x+8x^2+x^3=x(x^2+8x+16)=...
x^2+8x+16=0
x1,2=-4<u>+</u>корень(16-16)=-4
...=x(x+4)(x+4)=x(x+4)^2
1, 2, 3, ..., 150
a1 = 1
a2 = 2
d = a2 - a1 = 2 - 1 = 1
a150 = 150
S150 = (a1 +a150)*75 = 151*75 = 11325
1) (б-2а)2=2б-4а2) (2а-б)2=4а-2б1) 2м+12м+26=2(м+6м+13)=2(7м+13)2) 64-16б+2б=2(32-8б+б)=2(32-7б)
A)y^2-6y=0
y(y-6)=0
y=0 или y-6=0
y=6