- La -1 x + 1 (x+2x+2) (a) Let u = x + 2x + 2...

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- La -1 x + 1 (x²+2x+2)³ (a) Let u = x² + 2x + 2 (b) Then du = (2x + 2) dx → du = 2(x + 1) dr or (c) If z = -1, then u= (-1)² + 2(-1) +2=1 (d) If z = 1, then u = (1)² + 2(1) + 2 = 5 (e) Now substitute dr ¹/2 du = (x + 1) dr - La -1 x + 1 (x²+2x+2)³ (a) Let u = x² + 2x + 2 (b) Then du = (2x + 2) dx → du = 2(x + 1) dr or (c) If z = -1, then u= (-1)² + 2(-1) +2=1 (d) If z = 1, then u = (1)² + 2(1) + 2 = 5 (e) Now substitute dr ¹/2 du = (x + 1) dr

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