1.

For what values of k, the equation 9x2+6kx+4=0 has real roots?CLASS10​

Answer»

Step-by-step EXPLANATION:

b^2 -4AC >~ 0

36k^2 -4*9*4>~0

36k^2 >~ 36*4

K^2>~4

so k >= -2 or +2



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