Solve the following quadratie equations by
completing square method :
(1) x2 + x-20 =0​

1 thought on “Solve the following quadratie equations by<br />completing square method :<br />(1) x2 + x-20 =0​”

1. Answer:

   Given, x

   2

   +x−20=0

   ⇒x

   2

   +5x−4x−20=0

   ⇒x(x+5)−4(x+5)=0

   ⇒(x−4)(x+5)=0

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