0
Wiki User
78
Solon Thompson β
It is: 78+a simplified
It is 78 + a.
78 + 79 + 80 + 80 + 81 + 81 = 479
kutta
81
9
a3 - 2a2 + 4a - 8 = a2(a - 2) + 4(a - 2) = (a - 2)(a2 + 4)
A3+b3
(a+b)3=a3+b3+3ab(a+b) a3+b3=(a+b)3-3ab(a+b) a3+b3=(a+b)(a2-ab+b2)
81*82/2= 3321
105 + 66 + 287 + 81 = 539
-81
-81 + 11 = -70
18 + 81 = 99
-81 + 623 = 542
-81 + 43 = -38