Math, asked by khwaishg189, 8 months ago

x^2-1/2x-1/2=0 find the nature of the roots of the following quadratic equation​

Answers

Answered by mukeshsharma27
11

hope this will help you

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Answered by ItzAditt007
5

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☆ Given quadratic equation:-

  • x²-1/2x-1/2 = 0.

☆ To find:-

  • Nature of the roots.

☆ Now,

=》 x²-1/2x-1/2 = 0

=》 2x²-x-1/2 = 0

{By Taking LCM}

=》 2x²-x-1 = 0×2.

{\small{\blue{\boxed{=》\:\:2xsquare-x-1\:=\:0}}}}

☆ So,

Discriminant (d)

{\large{\red{\boxed{=\:\:bsquare-4ac}}}}

Also,

We know that

  • If d=0 then roots are real and equal.

  • If d<0 Then real roots does not exist.

  • If d>0 Then roots are real and distinct.

Therefore,

In this case,

=》 d = (-1)²-4(2)(-1).

=》 d = 1-(-8)

=》 d = 1+8

{\large{\blue{\boxed{=》\:\:d\:=\:9}}}}

So d>0 therefore the given quadratic equation have real (non-negative) and distinct roots in nature.

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