evaluate by completing square and using trig sub-show work
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This is my FOURTH time posting this problem... Follow my instructions CLOSELY. Use TRIGONOMETRIC SUBSTITUTION to solve this problem. DO NOT just solve this the regular method. Use trigonometric substitution by COMPLETING the SQUARE. Any answers that use a method other than TRIG SUBSTITUTION will be marked WRONG.
Concept Check
Trigonometric Substitution:
Why is Completing the Square useful when you are considering integration by trigonometric substitution?