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3 years ago

How many real roots does the following equation have? x4 -81 = 0

Mathematics

2 answers:

vazorg [7]3 years ago

5 0

X^4-81 =
(x^2-9)(x^2+9) =
(x+3)(x-3)(x^2+9)

There are two real roots (at x=3,-3).

Zepler [3.9K]3 years ago

4 0

Answer:

Find roots of x4−81=0 by solving for x. x=3,−3

Step-by-step explanation:

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