1.

What must be subtracted from a3 - 4a2 + 6 to abtain a2 - 2a + 1 ?​

Answer»

ANSWER:

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Let x should be subtracted,

a^3 - 4a^2 + 5A - 6 - x = a^2 - 2A + 1

=> a^3 - 4a^2 + 5a - 6 - a^2 + 2a - 1 = x

=> a^3 - 4a^2 - a^2 + 5a + 2a - 6 - 1 = x

=> a^3 - 5a^2 + 7a - 7 = x

Hence. a^3 - 5a^2 + 7a - 7 should be subtracted.


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