document.write( "Question 390071: If one root of the equation ... 2x^2+10x+k=0 is -2, find K and the other root? \n" ); document.write( "

Algebra.Com's Answer #276519 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "Hi,        
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document.write( "2x^2+10x+k=0 when x = -2
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document.write( " 2(-2)^2 + 10*(-2) + k = 0
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document.write( "    8 - 20 + k = 0
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document.write( "            k = 12\r
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document.write( "2x^2+10x+12=0
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document.write( "2(x^2 + 5x + 6) = 0
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document.write( "(x^2 + 5x + 6) = 0
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document.write( "factoring
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document.write( "( x+2)(x+ 3)= 0 Note:SUM of the inner product(2x) and the outer product(3x) = 5x
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document.write( "( x+2)= 0
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document.write( "    x = -2  Already determined
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document.write( "(x+ 3)= 0
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document.write( "    x = -3, the other root \n" );
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