document.write( "Question 1049759: Please help I really need to know the method for this one,but not using long division..Thank you so much:\r
\n" ); document.write( "\n" ); document.write( "P(x)=9x^3+12x^2+hx+k. When you divide by 3x-1, 2=remainder. When you divide by x+2, -5= remainder. Find h and k.\r
\n" ); document.write( "\n" ); document.write( "Please help,thank you!!
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Algebra.Com's Answer #665323 by advanced_Learner(501)\"\" \"About 
You can put this solution on YOUR website!
P(x)=9x^3+12x^2+hx+k. at x=1/3\r
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\n" ); document.write( "\n" ); document.write( "2=9(1/3)^3+12(1/3)^2+h(1/3)+k.
\n" ); document.write( "2=9(1/27)+12(1/9)+h(1/3)+k.
\n" ); document.write( "2=(1/3)+(4/3)+(h/3)+k.
\n" ); document.write( "6=(1)+(4)+(h)+3k.\r
\n" ); document.write( "\n" ); document.write( "\"1\"=\"h%2B3k\"\r
\n" ); document.write( "\n" ); document.write( "at x=-2
\n" ); document.write( "-5=9(-2)^3+12(-2)^2+h(-2)+k.\r
\n" ); document.write( "\n" ); document.write( "-5=-72+12(4)-2h+k.\r
\n" ); document.write( "\n" ); document.write( "-5=-72+(48)-2h+k.
\n" ); document.write( "-5=(-24)-2h+k.\r
\n" ); document.write( "\n" ); document.write( "\"19\"=\"-2h%2Bk\"\r
\n" ); document.write( "\n" ); document.write( "solve
\n" ); document.write( "\"1\"=\"h%2B3k\"
\n" ); document.write( "\"19\"=\"-2h%2Bk\"\r
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Solved by pluggable solver: SOLVE linear system by SUBSTITUTION
Solve:
\n" ); document.write( " \"+system%28+%0D%0A++++1%5Ch+%2B+3%5Ck+=+1%2C%0D%0A++++-2%5Ch+%2B+1%5Ck+=+19+%29%0D%0A++\"We'll use substitution. After moving 3*k to the right, we get:
\n" ); document.write( " \"1%2Ah+=+1+-+3%2Ak\", or \"h+=+1%2F1+-+3%2Ak%2F1\". Substitute that
\n" ); document.write( " into another equation:
\n" ); document.write( " \"-2%2A%281%2F1+-+3%2Ak%2F1%29+%2B+1%5Ck+=+19\" and simplify: So, we know that k=3. Since \"h+=+1%2F1+-+3%2Ak%2F1\", h=-8.
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\n" ); document.write( " Answer: \"system%28+h=-8%2C+k=3+%29\".
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