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

(1-b)2=±±b±b2

(a-9)2=±a2±a±

(1a-b)2=±*2±**b±b2

(a-9b)2=±a2±*a*+*2

(1-t)2=±±2t±t2

(1-t)*(1-t)=±±2t±t2

(t-1)*(1-t)=±t2±2t±

(13-z)*(13-z)=±±z±z2

(x-8)*(8-x)=±x2±x±

(13ax-bz)*(13ax-bz)=±*()2±**bz±(bz)2

(vt-8up)*(8up-vt)=±(vt)2±*vt*±*()2

(8-z)*(8-z)=±±z±z2

(1-x)*(x-1)=±x2±x±

(8x-bz2)*(8x-bz2)=±*()2±**bz2±(bz2)2

(13dp-t)*(t-13dp)=±t2±*t*±*()2


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