The value of 'm' for which the equation (1+m) x²-2(1+3m) x +(1+8m) =0 has equal roots, is Х

We know –

Question's given –

The equation (1+m) x²-2(1+3m) x +(1+8m) =0 has equal roots.That means, Δ Discriminant is 0.(D= b²-4ac)

According to the question –

Now, Δ Discriminant = 0

↠{-2(1+3m)}² -4 × (1+m) ×(1+8m)=0

↠4(1+3m)² - 4 (1+m)(1+8m) = 0

↠4(1+ 9m² + 6m - 1 -8m - m -8m²) =0

↠4 (1+ 9m² + 6m - 1 -9m -8m²)=0

↠m²-3m =0

↠m(m-3) = 0

↠m =0,3

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step-by-step explanation: