document.write( "Question 874200: If x+4 is a factor of 4x2+bx−20, what is the value of b? \n" ); document.write( "

Algebra.Com's Answer #527375 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi
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document.write( "Using Synthetic divsion
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document.write( "-4 4  b  -20
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document.write( "     -16
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document.write( "   4
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document.write( "-4(b -16) = 20
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document.write( "   b - 16 = -5
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document.write( "    b = 11
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document.write( "4x^2 + 11x -20 = 0
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document.write( "(x+ 4)(4x - 5) - 0 \n" );
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