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If $k_{1}, k_{2}$ are the sum and product of the slopes of the pair of lines $2 x^{2} + 4 xy + y^{2} = 0$ then $k_{1} + k_{2}$ is

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Correct option is C

If m1,m2are slopes of lines represented by the combined equation ax2+2hxy+by2=0 then m1+m2=−2hb and m1⋅m2=abGiven k1,k2are the sum and product of the slopes of the pair of lines 2x2+4xy+y2=0Hence, k1=−4 and k2=2Therefore, k1+k2=−2

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If k1,k2 are the sum and product of the slopes of the pair of lines 2x2+4xy+y2=0 then k1+k2 is

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If $k_{1}, k_{2}$ are the sum and product of the slopes of the pair of lines $2 x^{2} + 4 xy + y^{2} = 0$ then $k_{1} + k_{2}$ is