i am having trouble with  finding the x-intercept of  y = x3 + 2 (-1.26, 0) is the closest i got

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015
1st Edition
ISBN:9781680331141
Author:HOUGHTON MIFFLIN HARCOURT
Publisher:HOUGHTON MIFFLIN HARCOURT
Chapter9: Solving Quadratic Functions
Section: Chapter Questions
Problem 31CR
Question
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i am having trouble with 

finding the x-intercept of  y = x3 + 2

(-1.26, 0) is the closest i got

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