Question

Which product is negative?

−7⋅(−3)⋅(−5)⋅(−8)

6⋅(−2)⋅(−3)⋅1

−2⋅(−4)⋅8⋅(−1)

−3⋅(−4)⋅(−9)⋅0

Answer 1

-2 x -4 x 8 x -1

Explanation:

-7 x -3 x -5 x -8

two negatives equal a positive

-7 x -3 = Y

-5 x -8 = X

X x Y

A positive times a positive is still positive

-------------------------------------------------------------

6 x -2 x -3 x 1

6 x -2 = -X

-3 x -1 = -Y

-X x -Y

Two negatives equal a positive

--------------------------------------------------------------

-3 x -4 x -9 x 0

-3 x -4 = X

-9 x 0 = 0

X x 0 = 0

-------------------------------------------------------------------

-2 x 4 x 8 x -1

-2 x -4 = X

8 x -1 = -Y

X x -Y = -Z