Askor said: I thought trigonometric substitution only function if there is accessible a sq. root for example ##sqrt x^two + 2 ##. No. Trig substitution is helpful For those who have the sum or change of squared phrases - they need not be inside of a square root. The life https://gabletoppak.com/why-white-label-water-bottles-are-a-game-changer-for-your-brand/