1. (a^2+b)(a+b^2)= a^3+a^2b^2+ab+b^3
<span>2. (a^2+2b)(2a+b^2)= 2a^3+a^2b^2+4ab+2b^3</span>
D=b^-4ac=(-7)^- 4 *4(-2)=49+32=81=9^ >0,то 2 корня
C1=2;
C2=-1/8
X^2-4x+4=0
(x-2)^2=0
x^2-4x+4=0
(x-2)^2=0
x-2=0
x=0+2
x=2
(1/17+5)/(1/17-3)=(1/17+85/17)/(1/17-51/17)=86/17:(-50/17)=86/17*(-17/50)=
=-86/50= - 1 36/50= - 1 18/25
(5 2/3+5)/(5 2/3-3)=(17/3+15/3)/(17/3-9/3)=32/3:8/3=32/3*3/8=32/8=4