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KitKatKel99
KitKatKel99 KitKatKel99
  • 25-01-2017
  • Mathematics
Answered

Find all the solutions to the given polynomial. x^4+x^2-20=0

Verified Answer :

kierstenwark
kierstenwark kierstenwark
  • 25-01-2017

1: Factor the problem
    (x^2+5)(x^2-4)=0
2: Set each equal to 0
     x^2+5=0
     x^2-4=0
3: Solve Each
    x^2=-5
    - Cannot take square root of a negative, therefore extraneous
    x^2=4
    x= 2, -2


Answer Link
anishayyadevara
anishayyadevara anishayyadevara
  • 25-01-2017

Find all the solutions to the given polynomial. x^4+x^2-20=0 x^2+5=0
     x^2-4=0, x^2=-5

x^2=4
    x= 2, -2

Answer Link

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