SOLUTION: Define * as a*b = a + b + ab, evaluate the following. a) 3 * -4 b) -1/2 * 3 c) 1/3 * ( - 1/5 ) d) -3*(- 1/2 ) e) - 1/2*(-1/4)

Algebra ->  Matrices-and-determiminant -> SOLUTION: Define * as a*b = a + b + ab, evaluate the following. a) 3 * -4 b) -1/2 * 3 c) 1/3 * ( - 1/5 ) d) -3*(- 1/2 ) e) - 1/2*(-1/4)       Log On


   



Question 1205218: Define * as a*b = a + b + ab, evaluate the following.
a) 3 * -4
b) -1/2 * 3
c) 1/3 * ( - 1/5 )
d) -3*(- 1/2 )
e) - 1/2*(-1/4)

Answer by josgarithmetic(39623) About Me  (Show Source):
You can put this solution on YOUR website!
Follow the defined rule for each of your enumerated question parts.


Doing just (d):

-3*(-1/2)

Using the rule, first
-3+(-1/2)+(-3)(-1/2)

-6/2-1/2+3/2
-6/2+2/2
-4/2
-2

That evaluation result is -2.