document.write( "Question 277166: find the value of a, b, and c so that i can decompose it to partial functions\r
\n" ); document.write( "\n" ); document.write( "(3x -13)/(6x^2-x-12)\r
\n" ); document.write( "\n" ); document.write( "thank you!
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Algebra.Com's Answer #202126 by ankor@dixie-net.com(22740)\"\" \"About 
You can put this solution on YOUR website!
find the value of a, b, and c so that i can decompose it to partial functions
\n" ); document.write( "\"%283x+-13%29%2F%286x%5E2-x-12%29\" = \"%283x+-+13%29%2F%28%282x-3%29%283x%2B4%29%29\"
\n" ); document.write( ":
\n" ); document.write( "Write the given expression as a sum using A & B
\n" ); document.write( "\"%283x+-+13%29%2F%28%282x-3%29%283x%2B4%29%29\" = \"A%2F%282x-3%29\" + \"B%2F%283x%2B4%29\"
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\n" ); document.write( "Multiply by the LCD, (2x-3)(3x+4)
\n" ); document.write( "(2x-3)(3x+4)\"%283x+-+13%29%2F%28%282x-3%29%283x%2B4%29%29\" = (2x-3)(3x+4)\"A%2F%282x-3%29\" + (2x-3)(3x+4)\"B%2F%283x%2B4%29\"
\n" ); document.write( "results
\n" ); document.write( "3x - 13 = A(3x+4) + B(2x-3)
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\n" ); document.write( "3x - 13 = 3xA + 4A + 2xB - 3B
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\n" ); document.write( "3x - 13 - (3A + 2B)x + 4A - 3B
\n" ); document.write( "Coefficients of x are equal
\n" ); document.write( "3A + 2B = 3
\n" ); document.write( "Constants are equal
\n" ); document.write( "4A - 3B = -13
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\n" ); document.write( "Solve for two unknowns using elimination, multiply 1st eq by 3, 2nd eq by 2
\n" ); document.write( "9A + 6B = 9
\n" ); document.write( "8A - 6B =-26
\n" ); document.write( "----------------adding eliminates B, find A
\n" ); document.write( "17A = -17
\n" ); document.write( "A = -1
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\n" ); document.write( "Find B
\n" ); document.write( "3A + 2B = 3
\n" ); document.write( "3(-1) + 2B = 3
\n" ); document.write( "-3 + 2B = 3
\n" ); document.write( "2B = 3 + 3
\n" ); document.write( "2B = 6
\n" ); document.write( "B = 3
\n" ); document.write( ":
\n" ); document.write( "We have
\n" ); document.write( "\"%283x+-+13%29%2F%286x%5E2-x-12%29\" = \"-1%2F%282x-3%29\" + \"3%2F%283x%2B4%29\"
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\n" ); document.write( "You should check this by adding the two fractions on the right to see if they equal the expression on the left
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