Respuestas

2013-08-30T19:42:48+02:00

(3+4)2 = 7^{2} = 49

3´2 + 4´2  =  3{2} +  4^{2}  = 9 + 16 = 25

(5+6)2 =  11^{2} = 121

5´2 + 6´2 =  5^{2} +  6^{2}  = 25 + 36 = 61

(a - 3)2 =  (a - 3)^{2} =  a^{2} - 6a + 9

(7 + b)2 =  (7 + b)^{2} = 49 + 14b +  b^{2}

(8 - 1) (8 + 1) = 64 - 1 = 63

(3+a) (3+b) = 3.3 + 3b + 3a + ab = 9 + 3a + 3b + ab