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anonymous
 4 years ago
How do we find the value of k?
anonymous
 4 years ago
How do we find the value of k?

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[(3x+k)^3 + (4x7)^2 \]

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0has a remainder of 33 when divided by (x3), how do we find the value of k?

A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1(3x+k)3+(4x−7)2 + 33  = some Integer , say I (x3)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0why did you add 33 to the expression?

A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1Because 33 remained when we divided the expression by (x3). So adding it to the expression will cause the expression to be completely divisible by (x3).

A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1Sorry, it had to be subtracted.

A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1(3x+k)3+(4x−7)2  33  = some Integer , say I (x3)

A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1Expanding it is the only way it seems. (a + b)^3 = a^3 + 3a^2b + 3ab^2 + b^3

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0i've expanded it, but now im lost. how do we find k from here?

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0a_clan, do u know how to solve this using the remainder theorem? :)

A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1f(x)=(3x+k)^3+(4x−7)^2 According to remainder theorem, f(3) = 33 (9+k)^3 + (12  7)^2 = 33 Rest is simple calculation.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I got f(x) = 721 + k^3 is it incorrect?

A_clan
 4 years ago
Best ResponseYou've already chosen the best response.1k^3 + 27k^2 + 243k + 721 = 0
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