Question 832338: If 1 is a root of the equation 5x^2 +kx-3=0,find the other root.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! If 1 is a root of the equation 5x^2 +kx-3=0,find the other root.
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Using synthetic division::
1)....5....k....-3
......5....k+5..|..K+2
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Solve:: k+2 = 0
k = -2
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Equation:
y = 5x^2 -2x -3
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Factor: y = (x-1)(5x+3)
Other root:: x = -3/5
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Cheers,
Stan H.
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