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

(8-b)2=±±b±b2

(a-2)2=±a2±a±

(8a-b)2=±*2±**b±b2

(a-2b)2=±a2±*a*+*2

(8-t)2=±±16t±t2

(8-t)*(8-t)=±±16t±t2

(t-8)*(8-t)=±t2±16t±

(12-z)*(12-z)=±±z±z2

(x-4)*(4-x)=±x2±x±

(12ax-bz)*(12ax-bz)=±*()2±**bz±(bz)2

(vt-4up)*(4up-vt)=±(vt)2±*vt*±*()2

(4-z)*(4-z)=±±z±z2

(8-x)*(x-8)=±x2±x±

(4x-bz2)*(4x-bz2)=±*()2±**bz2±(bz2)2

(12dp-t)*(t-12dp)=±t2±*t*±*()2


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