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If the quadratic equation x2 + …

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If the quadratic equation x2 + 4x + k = 0 has real and equal roots, then
  • 2 answers

Faisal Khan 2 months ago

Solution verified Verified by Toppr x 2 −4x+k=0 is of the form ax 2 +bx+c=0 where a=1b=−4c=k Roots are equal⇒ Discriminant=0 ⇒b 2 −4ac=0 ⇒(−4) 2 −4×1×k=0 ⇒16−4k=0 ⇒−4k=−16 ∴k= 4 16 ​ =4 Solve any question of Quadratic Equations with:-

Divya Sahu 2 months, 1 week ago

a=1,b=4,c=k d=b^2-4ac 0=4^2-4×1×k 0=16-4k -4k=-16 k=16/4=4
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