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Math

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PROBLEM

f(x)=2x3+x225x+12x3 f(x) = \frac{2x^3 + x^2 - 25x + 12}{x - 3}

STEP 1

1. The function f(x) f(x) is a rational function.
2. We are tasked with simplifying or evaluating the function.
3. The denominator x3 x - 3 suggests potential division or simplification by polynomial division.

STEP 2

1. Perform polynomial long division to simplify the expression 2x3+x225x+12x3 \frac{2x^3 + x^2 - 25x + 12}{x - 3} .
2. Interpret the result of the division.

STEP 3

Set up the polynomial long division with 2x3+x225x+12 2x^3 + x^2 - 25x + 12 as the dividend and x3 x - 3 as the divisor.

STEP 4

Divide the leading term of the dividend 2x3 2x^3 by the leading term of the divisor x x to get the first term of the quotient: 2x2 2x^2 .

STEP 5

Multiply the entire divisor x3 x - 3 by the first term of the quotient 2x2 2x^2 to get 2x36x2 2x^3 - 6x^2 .

STEP 6

Subtract 2x36x2 2x^3 - 6x^2 from the original dividend 2x3+x225x+12 2x^3 + x^2 - 25x + 12 to get the new dividend: 7x225x+12 7x^2 - 25x + 12 .

STEP 7

Repeat the division process: divide 7x2 7x^2 by x x to get 7x 7x .

STEP 8

Multiply the divisor x3 x - 3 by 7x 7x to get 7x221x 7x^2 - 21x .

STEP 9

Subtract 7x221x 7x^2 - 21x from the new dividend 7x225x+12 7x^2 - 25x + 12 to get the next dividend: 4x+12 -4x + 12 .

STEP 10

Divide 4x -4x by x x to get 4 -4 .

STEP 11

Multiply the divisor x3 x - 3 by 4 -4 to get 4x+12 -4x + 12 .

STEP 12

Subtract 4x+12 -4x + 12 from the current dividend 4x+12 -4x + 12 to get a remainder of 0 0 .

SOLUTION

The quotient from the division is 2x2+7x4 2x^2 + 7x - 4 with a remainder of 0 0 , indicating that:
f(x)=2x2+7x4 f(x) = 2x^2 + 7x - 4 This is the simplified form of the function.

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