( y-4)(y-4)-(y-3)^2=y^2-16-y^2+6y-9=6y-25
(а-2)(а+4)-(а+1^2)=a^2+2a-8-a-1=a^2+a-9
(b-4)(b+2)-(b-1^2)=b^2-2b-8-b+1=b^2-3b-7
1. ( y-4) (y-4) - (y-3)^2 = (у - 4)^2 - y^2 + 6y - 9= y^2 - 8y + 16 - y^2 + 6y - 9= 7 - 2y.
2. a^2 +4a - 2a - 8 - a- 1= a^2 + a - 9.
3. b^2 - 4b +2b - 8 - b + 1=b^2 - 3b - 7
( y-4)(y-4)-(y-3)^2=y^2-16-y^2+6y-9=6y-25
(а-2)(а+4)-(а+1^2)=a^2+2a-8-a-1=a^2+a-9
(b-4)(b+2)-(b-1^2)=b^2-2b-8-b+1=b^2-3b-7
1. ( y-4) (y-4) - (y-3)^2 = (у - 4)^2 - y^2 + 6y - 9= y^2 - 8y + 16 - y^2 + 6y - 9= 7 - 2y.
2. a^2 +4a - 2a - 8 - a- 1= a^2 + a - 9.
3. b^2 - 4b +2b - 8 - b + 1=b^2 - 3b - 7