A few days ago
need help on this HW equation x^4 + 12x^2 – 64= 0 ****note that there are four roots?
need help on this HW equation x^4 + 12x^2 – 64= 0 ****note that there are four roots?
Top 1 Answers
A few days ago
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Split this into two brackets to get:
(x^2 +16)(x^2 -4) = 0
therefore
x^2 = -16 or x^2 = 4
you cant’ have square root of negative number therefore x = +2 or x = -2
0
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