document.write( "Question 1206980: Which function is equivalent to f(x) = 6x^2 - 13x + 5?\r
\n" ); document.write( "\n" ); document.write( "A. f(x) = (3x - 1)(2x + 5)
\n" ); document.write( "B. f(x) = (3x - 5)(2x - 1)
\n" ); document.write( "C. f(x)= (3x - 1) (2x - 5)
\n" ); document.write( "D. f(x) = (3x - 5)(2x + 1)
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Algebra.Com's Answer #844749 by greenestamps(13200)\"\" \"About 
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\n" ); document.write( "\"6x%5E2-13x%2B5\"

\n" ); document.write( "All of the answer choices produce the correct quadratic term in the product: \"%283x%29%282x%29=6x%5E2\".

\n" ); document.write( "The constant term is positive; that means the signs in the two factors are the same -- both positive of both negative.

\n" ); document.write( "The linear term is negative; that means the signs in both factors must be negative.

\n" ); document.write( "So we need the signs in both factors to be negative; the answer is either choice B or choice C.

\n" ); document.write( "To determine which is correct, perform the multiplication in each of those choices to find which one produces the correct linear term in the product.

\n" ); document.write( "Choice B: \"%283x-5%29%282x-1%29\"
\n" ); document.write( "The linear term in the product is \"%28-5%29%282%29%2B%28-1%29%283%29=-10-3=-13\"
\n" ); document.write( "The linear term in the product is correct.

\n" ); document.write( "ANSWER: B

\n" ); document.write( "We don't need to look at answer choice C, because choice B is correct. But observe that the linear term in the product with choice C is \"%28-1%29%282%29%2B%28-5%29%283%29=-2-15=-17\", which is not correct.

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