14]
8(1/4 p^3 - 5p^2 + p - 3/2)
2p^3 - 40p^2 + 8p - 12
6(5/3 - p + 7p^2 - 1/2 p^3)
10 - 6p + 42p^2 - 3p^3
.2p^3 -. 40p^2 + 8p - 12
-3p^3 + 42p^2 - 6p + 10
--------------------------------------- +
-p^3 + 2p^2 + 2p - 2 (A)
15]
(7 - 3y - y^2) - (2y^2 + 1)
= 7 - 3y - y^2 - 2y^2 - 1
= 6 - 3y - 3y^2
= 3(2 - y - y^2) (A)
16]
(b^2 + ab - 3a^2) - (a^2 - ab - b^2)
= b^2 + ab - 3a^2 - a^2 + ab + b^2
= 2b^2 + 2ab - 4a^2 (C)
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14]
8(1/4 p^3 - 5p^2 + p - 3/2)
2p^3 - 40p^2 + 8p - 12
6(5/3 - p + 7p^2 - 1/2 p^3)
10 - 6p + 42p^2 - 3p^3
.2p^3 -. 40p^2 + 8p - 12
-3p^3 + 42p^2 - 6p + 10
--------------------------------------- +
-p^3 + 2p^2 + 2p - 2 (A)
15]
(7 - 3y - y^2) - (2y^2 + 1)
= 7 - 3y - y^2 - 2y^2 - 1
= 6 - 3y - 3y^2
= 3(2 - y - y^2) (A)
16]
(b^2 + ab - 3a^2) - (a^2 - ab - b^2)
= b^2 + ab - 3a^2 - a^2 + ab + b^2
= 2b^2 + 2ab - 4a^2 (C)