1+4=5, 2+5=12, 3+6=21, 8+11?
The answer is 96.Solution: 1+4(5) = 52+5(7) = 12(5+7)3+6(9) = 21(12+9)4+7(11) = 32(21+11)5+8(13) = 45(32+13)6+9(15) = 60(45+15)7+10(17) = 77(60+17)8+11(19) = 96(77+19).