Askor mentioned: I assumed trigonometric substitution only work if there is accessible a square root including ##sqrt x^two + 2 ##. No. Trig substitution is helpful if you have the sum or change of squared phrases - they don't need to be inside of a sq. root. Customers have gotten https://gabletoppak.com/is-it-legal-to-sell-natural-mineral-water-in-gabletop-cartons-tetra-paks-and-aluminium-cans-in-india/