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penvellum.ecollege.con/ urseld-147603 79&OpenVellum; HMAC 06fac03d8a71f0374eb0cf2d5d64ccb7# 10010 Cerritos College Math 155 Precalculus Summer 2018- 22188 Cerritos College Math 155 Precalculus Summer 2018 -22188 Homework: Chapter 3 Homework 7/5/2018 Score: 0 of 1 pt 31 of 60 (42 complete) ? 3.2.101 1/2 1/4 Tre soulion is xe? (Simplity you answer Type an exac ct answer, using radicals as needed Express complex numbers in terms of i Use a comma to separate answe Enter your answer in the answer box and then click Check Answer All parts showing Clear All /5 F8 TO 4 break 5 6 8 9 0

Explanation / Answer

x^1/2 - 4x^1/4 + 3 = 0

let x^1/4 = y

then x^1/2 = y^2

equation becomes

y^2 - 4y + 3 = 0

( y - 3) ( y -1 ) = 0

y = 3 , 1

x^1/4 = 3

x = 81

x^1/4 = 1

x = 1

hence, solutions are

x = 1 , 81

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