Askor claimed: I believed trigonometric substitution only perform if there is offered a square root like ##sqrt x^2 + 2 ##. No. Trig substitution is helpful When you've got the sum or big difference of squared phrases - they need not be inside a sq. root. There is apparently no https://gabletoppak.com/is-it-legal-to-sell-natural-mineral-water-in-gabletop-cartons-tetra-paks-and-aluminium-cans-in-india/