Mathematics, 13.07.2019 04:30 audreymvarney

What are the solutions of the equation x4 - 9x2 + 8 = 0? use u substitution to solve.
a. x = 1 and x = 2sqrt2
b. x=+/-1 and x = +/-2sqrt2
c. x=+/-i and x = +/-2isqrt5
d. x = +/-i and x=2sqrt2

Answers: 1

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What are the solutions of the equation x4 - 9x2 + 8 = 0? use u substitution to solve.
a. x =...

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What are the solutions of the equation x4 - 9x2 + 8 = 0? use u substitution to solve. a. x = 1 and x = 2sqrt2 b. x=+/-1 and x = +/-2sqrt2 c. x=+/-i and x = +/-2isqrt5 d. x = +/-i and x=2sqrt2

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What are the solutions of the equation x4 - 9x2 + 8 = 0? use u substitution to solve.
a. x = 1 and x = 2sqrt2
b. x=+/-1 and x = +/-2sqrt2
c. x=+/-i and x = +/-2isqrt5
d. x = +/-i and x=2sqrt2