(a-b)2=a2-2ab+b2

(7-b)2=±±b±b2

(a-9)2=±a2±a±

(7a-b)2=±*2±**b±b2

(a-9b)2=±a2±*a*+*2

(7-t)2=±±14t±t2

(7-t)*(7-t)=±±14t±t2

(t-7)*(7-t)=±t2±14t±

(16-z)*(16-z)=±±z±z2

(x-1)*(1-x)=±x2±x±

(16ax-bz)*(16ax-bz)=±*()2±**bz±(bz)2

(vt-1up)*(1up-vt)=±(vt)2±*vt*±*()2

(1-z)*(1-z)=±±z±z2

(7-x)*(x-7)=±x2±x±

(1x-bz2)*(1x-bz2)=±*()2±**bz2±(bz2)2

(16dp-t)*(t-16dp)=±t2±*t*±*()2


×