(a+b)2=a2+2ab+b2
(2+b)2=+
b+b2
(a+6)2=a2+a+
(6a+b)2=*
2+
*
*b+b2
(a+2b)2=a2+*a*
+
*
2
(5+z)*(5+z)=+
z+z2
(x+5)*(5+x)=x2+x+
(6ax+bz)*(6ax+bz)=*(
)2+
*
*bz+(bz)2
(vt+5up)*(5up+vt)=(vt)2+*vt*
+
*(
)2
(5+z)*(5+z)=+
z+z2
(x+5)*(5+x)=x2+x+
(5x+bz2)*(5x+bz2)=*(
)2+
*
*bz2+(bz2)2
(t+5dp)*(5dp+t)=t2+*t*
+
*(
)2