(-m+n)²=(n-m)²=n²-2mn+m²
(-p+q)²=(q-p)²=q²-2pq+p²
(-a+b)²=(b-a)²=b²-2ab+a²
(y-4)²=y²-8y+16
(c-6)²=c²-12c+36
(d-7)²=d²-14d+49
(-n-8)²=-(n+8)²=-(n²+16n+64)=-n²-16n-64
-(t+6)²=-(t²+12t+36)=-t²-12t-36
-(m+7)²=-m²-14m-49
-(c+9)²=-c²-18c-81
-(x+1)²=-x²-2x-1
-(a+12)²=-a²-24a-144
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(-m+n)²=(n-m)²=n²-2mn+m²
(-p+q)²=(q-p)²=q²-2pq+p²
(-a+b)²=(b-a)²=b²-2ab+a²
(y-4)²=y²-8y+16
(c-6)²=c²-12c+36
(d-7)²=d²-14d+49
(-n-8)²=-(n+8)²=-(n²+16n+64)=-n²-16n-64
-(t+6)²=-(t²+12t+36)=-t²-12t-36
-(m+7)²=-m²-14m-49
-(c+9)²=-c²-18c-81
-(x+1)²=-x²-2x-1
-(a+12)²=-a²-24a-144