Prove that the product of -1 and -1 equals to +1
multiplying 2 negatives will equal a postive.
Multiplying two positive numbers or two negative numbers always equal a positive numberMultiplying a positive number and a negative number always equals a negative number Example 1- 2x2=4. -3x(-4)=122- -2x2=(-4). -3x4= (-12)Hope this helps
