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

(8-b)2=±±b±b2

(a-4)2=±a2±a±

(8a-b)2=±*2±**b±b2

(a-4b)2=±a2±*a*+*2

(8-t)2=±±16t±t2

(8-t)*(8-t)=±±16t±t2

(t-8)*(8-t)=±t2±16t±

(14-z)*(14-z)=±±z±z2

(x-9)*(9-x)=±x2±x±

(14ax-bz)*(14ax-bz)=±*()2±**bz±(bz)2

(vt-9up)*(9up-vt)=±(vt)2±*vt*±*()2

(9-z)*(9-z)=±±z±z2

(8-x)*(x-8)=±x2±x±

(9x-bz2)*(9x-bz2)=±*()2±**bz2±(bz2)2

(14dp-t)*(t-14dp)=±t2±*t*±*()2


×