SOLUTION: Fine the real or imaginary solutions of each equation by factoring
{{{X^4-8x^2=-16}}}
Can you also explain how to get this? I don't understand this lesson.
Algebra ->
Quadratic Equations and Parabolas
-> SOLUTION: Fine the real or imaginary solutions of each equation by factoring
{{{X^4-8x^2=-16}}}
Can you also explain how to get this? I don't understand this lesson.
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Add 16 to both sides
x^4 - 8x^2 + 16 = 0
Can be factored to
(x^2 - 4)(x^2 - 4) = 0
then we have
x^2 = 4
x = +/-
two solutions
x = +2
x = -2
:
Graphically
