Askor stated: I believed trigonometric substitution only do the job if there is out there a sq. root which include ##sqrt x^2 + 2 ##. No. Trig substitution is helpful When you have the sum or distinction of squared conditions - they needn't be inside of a sq. root. In https://gabletoppak.com/reducing-microplastics-why-gable-top-cartons-are-better-than-plastic-water-bottles/
Gable carton for Dummies
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