document.write( "Question 1183387: The expression 8x^3 + ax^2 + bx - 9 leaves remainders -95 and 3 when divided by x + 2 and 2x - 3 respectively. Calculate the value of a and of b. \n" ); document.write( "
Algebra.Com's Answer #813684 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\n" ); document.write( "given:\r
\n" ); document.write( "\n" ); document.write( "\"+8x%5E3+%2B+ax%5E2+%2B+bx+-+9\" \r
\n" ); document.write( "\n" ); document.write( "\"x+%2B+2\" is a factor of given polynomial
\n" ); document.write( "\"x+%2B+2+=+0\"
\n" ); document.write( " \"x+=+-+2\"\r
\n" ); document.write( "\n" ); document.write( "Remainder = \"-95\"\r
\n" ); document.write( "\n" ); document.write( "\"2x+-+3\" is a factor of given polynomial\r
\n" ); document.write( "\n" ); document.write( "\"2x+-+3=0\"
\n" ); document.write( "\"2x+=3\"
\n" ); document.write( "\"x=3%2F2\"\r
\n" ); document.write( "\n" ); document.write( "Remainder =\"3\"\r
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\n" ); document.write( "\n" ); document.write( "\"8x%5E3+%2B+ax%5E2+%2B+bx+-+9+\"..........Put the value of \"x\"\r
\n" ); document.write( "\n" ); document.write( "\"8%28-2%29%5E3+%2B+a%28-2%29%5E2+%2B+b%28-2%29+-+9=-95\"\r
\n" ); document.write( "\n" ); document.write( "\"a%28-2%29%5E2+-+2+b+-+73+=+-95\"\r
\n" ); document.write( "\n" ); document.write( "\"4a+-2b++=-95%2B73\"\r
\n" ); document.write( "\n" ); document.write( "\"4a+++=2b-22\"...........solve for \"a\"\r
\n" ); document.write( "\n" ); document.write( "\"a+=2b%2F4+-22%2F4\"\r
\n" ); document.write( "\n" ); document.write( "\"a+=b%2F2++-11%2F2\"...........eq.1\r
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\n" ); document.write( "\n" ); document.write( "\"8%283%2F2%29%5E3+%2B+a%283%2F2%29%5E2+%2B+b%283%2F2%29+-+9=3\"\r
\n" ); document.write( "\n" ); document.write( "\"8%2827%2F8%29+%2B+a%289%2F4%29+%2B+b%283%2F2%29+=3%2B9\"\r
\n" ); document.write( "\n" ); document.write( "\"27+%2B+a%289%2F4%29+%2B+b%283%2F2%29+=12\"\r
\n" ); document.write( "\n" ); document.write( "\"a%289%2F4%29+%2B+b%283%2F2%29++=12-27\"\r
\n" ); document.write( "\n" ); document.write( "\"a%289%2F4%29+%2B+b%283%2F2%29++=-15\".......both sides multiply by \"4\"\r
\n" ); document.write( "\n" ); document.write( "\"9a+%2B+6b+=-60\".......simplify\r
\n" ); document.write( "\n" ); document.write( "\"3a+%2B+2b+=-20\".......solve for \"a\"\r
\n" ); document.write( "\n" ); document.write( "\"3a=-20-2b\"\r
\n" ); document.write( "\n" ); document.write( "\"a=-20%2F3-2b%2F3\"...........eq.2\r
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\n" ); document.write( "\n" ); document.write( "from eq.1 and eq.2\r
\n" ); document.write( "\n" ); document.write( "\"b%2F2++-11%2F2=-20%2F3-2b%2F3\" ......solve for \"b\"\r
\n" ); document.write( "\n" ); document.write( "\"b%2F2+%2B+2b%2F3=11%2F2-20%2F3\"\r
\n" ); document.write( "\n" ); document.write( "\"%287%2F6%29b=-7%2F6\"\r
\n" ); document.write( "\n" ); document.write( "\"b++=-1\"\r
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\n" ); document.write( "\n" ); document.write( "go to\r
\n" ); document.write( "\n" ); document.write( "\"a+=b%2F2++-11%2F2\"...........eq.1, substitute\"+b\"\r
\n" ); document.write( "\n" ); document.write( "\"a+=%28-1%29%2F2++-11%2F2\"...........eq.1\r
\n" ); document.write( "\n" ); document.write( "\"a+=-6\"\r
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\n" ); document.write( "\n" ); document.write( "then your expression is:\r
\n" ); document.write( "\n" ); document.write( "\"8x%5E3+-6x%5E2+-x+-+9\"\r
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\n" ); document.write( "\n" ); document.write( "check reminders:\r
\n" ); document.write( "\n" ); document.write( "\"%288x%5E3+-6x%5E2+-x+-+9%29%2F%28x%2B2%29=8x%5E2+-+22+x+%2B+43-95%2F%28x%2B2%29\"\r
\n" ); document.write( "\n" ); document.write( "\"8x%5E3+-+6+x%5E2+-+x+-+9+=+%28%288+x%5E2+-+22+x+%2B+43%29%29%2A%28x+%2B+2%29++-95\"\r
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\n" ); document.write( "\n" ); document.write( "\"%288x%5E3+-6x%5E2+-x+-+9%29%2F%282x-3%29=4+x%5E2+%2B+3+x+%2B+4%2B3%2F%282x+-+3%29\"\r
\n" ); document.write( "\n" ); document.write( "\"8+x%5E3+-+6+x%5E2+-+x+-+9+=+%28%284+x%5E2+%2B+3+x+%2B+4%29%29%2A%282+x+-+3%29+%2B+3\"\r
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