Question 3 Find the integral using an appropriate trigonometric substitution. dx Vx 2 +4 0 - ( x 2 - 8 ) / x 2 + 4 + C 0 1 ( x 2 - 4 ) / 2 1 x 3 + 4 + C 04 ( x 2 + 4 1 3 /2 1 8 3 + 4 + C 0 1 ( x 2 + 8 / / x 2 + 4 + C D Question 4 0.1 pts Evaluate the integral using an appropriate trigonometric substitution. * 2 = dx 1 4 -x2 LG M58 Ch 73 Trig substitution anestimaten