If x 3 is a factor of f(x) ax 2 bx 15, in which a and b are constants, what is the value of 3a b ...

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If x + 3 is a factor of f(x) = ax 2 + bx - 15, in

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If x + 3 is a factor of f(x) = ax² + bx - 15, in which a and b are constants, what is the value of 3a - b?

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If x + 3 is a factor of f(x) = ax 2 + bx - 15, in

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