If x=a³ + 3a² - 4ab³ - b³ And y = 2a³ - 6ab³ - b³ + 4a²b. Find y - x
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from which calculator you had written this question.
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(2a³-6ab³-b³+4a²b)-(a³+3a²-4ab³-b³)
(opening the bracket)
2a³-6ab³-b³+4a²b-a³-3a²+4ab³+b³
(bringing the like terms together)
2a³-a³-6ab³-4ab³-b³-b³+4a²b+3a²
ans-
a³-10ab³-2b³+a²b
(opening the bracket)
2a³-6ab³-b³+4a²b-a³-3a²+4ab³+b³
(bringing the like terms together)
2a³-a³-6ab³-4ab³-b³-b³+4a²b+3a²
ans-
a³-10ab³-2b³+a²b
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