433,118 views
25 votes
25 votes
Select all of the following equation(s) that are quadratic in form.

x4 – 6x2 – 27 = 0
3x4 = 2x
2(x + 5)4 + 2x2 + 5 = 0
6(2x + 4)2 = (2x + 4) + 2
6x4 = -x2 + 5
8x4 + 2x2 – 4x = 0

User Pieterbons
by
3.0k points

1 Answer

22 votes
22 votes

Answer:

Explanation:

x4 – 6x2 – 27 = 0

x=2.49,-2.49

3x4 = 2x

x=6

User Sid Vishnoi
by
3.4k points
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