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

(8-b)2=±±b±b2

(a-3)2=±a2±a±

(8a-b)2=±*2±**b±b2

(a-3b)2=±a2±*a*+*2

(8-t)2=±±16t±t2

(8-t)*(8-t)=±±16t±t2

(t-8)*(8-t)=±t2±16t±

(10-z)*(10-z)=±±z±z2

(x-2)*(2-x)=±x2±x±

(10ax-bz)*(10ax-bz)=±*()2±**bz±(bz)2

(vt-2up)*(2up-vt)=±(vt)2±*vt*±*()2

(2-z)*(2-z)=±±z±z2

(8-x)*(x-8)=±x2±x±

(2x-bz2)*(2x-bz2)=±*()2±**bz2±(bz2)2

(10dp-t)*(t-10dp)=±t2±*t*±*()2


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