find the value of k for which the roots are real and equal 3 k + 1 whole Into X square + 2 k + 1 into X + K is equals to zero
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3k+1=0
3k=-1
k=-1/3
2k+1=0
2k=-1
k=-1/2
-1/3+-1/2
-2+(-3)/6
-2-3/6
-5/6
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