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

(4-b)2=±±b±b2

(a-4)2=±a2±a±

(4a-b)2=±*2±**b±b2

(a-4b)2=±a2±*a*+*2

(4-t)2=±±8t±t2

(4-t)*(4-t)=±±8t±t2

(t-4)*(4-t)=±t2±8t±

(13-z)*(13-z)=±±z±z2

(x-1)*(1-x)=±x2±x±

(13ax-bz)*(13ax-bz)=±*()2±**bz±(bz)2

(vt-1up)*(1up-vt)=±(vt)2±*vt*±*()2

(1-z)*(1-z)=±±z±z2

(4-x)*(x-4)=±x2±x±

(1x-bz2)*(1x-bz2)=±*()2±**bz2±(bz2)2

(13dp-t)*(t-13dp)=±t2±*t*±*()2


×