Roots in the question below x^4 +3x^2 -4=0

First, factor the equation.

The equation factors to...

(x+1)(x-1)(x^2+4) = 0

Set each term to 0.

x + 1 = 0

x = -1

x - 1 = 0

x = 1

x^2 + 4 = 0

x^2 = -4

Square root...

x = ±

x = 2i, -2i.

The 4 roots in the equation are -1, 1, 2i, and -2i.

⭐ Answered by Hyperrspace (Ace) ⭐

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1/4 because there is 4 grades.

$30.32

step-by-step explanation:

65.00*.12=2.80

65.00-2.80=57.20

57.20*1.06=60.632

60.632/2=30.316