document.write( "Question 1011717: If x^2 - 3x + 2k is divided by x+2, the remainder is 7. What is k? Thank you. \n" ); document.write( "

Algebra.Com's Answer #627515 by MathTherapy(10552) $\"\"$ $\"About$

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\n" ); document.write( "If x^2 - 3x + 2k is divided by x+2, the remainder is 7. What is k? Thank you.
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Since x + 2 is a factor, we can say that: x + 2 = 0 -------> x = - 2
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document.write( " ------------ Remainder Theorem
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document.write( " --- Substituting - 2 for x in remainder theorem
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document.write( "7 = 4 + 6 + 2k -------------- Substituting 7 for f(- 2), and simplifying equation
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document.write( "7 = 10 + 2k
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document.write( "7 - 10 = 2k
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document.write( "- 3 = 2k
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document.write( "      OR           \n" );
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