Find the values of (i) (82)2−(18)2 (ii) (128)2−(72)2 (iii) 197×203 (iv) 198×198−102×10296 (v) (14.7×15.3) (vi) (8.63)2−(1.37)2
Evaluate : ∫x3(x−1)(x2+1)dx.
OR
Evaluate ∫sin x−x cos xx(x+sin x) dx.