4a5+28+6b7-30
4a5+6b7-2<—- this is a to the power of 5 , b to the power of 7
(Is that 5a or a to the power of 5 )
20a+28+42b-30
20a+42b-2<—— this is 5a , 7b
I think it may be: 0.66666666666
I only looked it up on the internet.
Answer 1:16 is the answer
What do you need help with?
As a rule the product of an ODD number of NEGATIVE SIGNS is always NEGATIVE
An the product of an EVEN number of NEGATIVE SIGNS is always POSITIVE
Then the following statement is the right one:
Negative, because the product (-7)(-2) is positive, and the product (-5)(1) is negative and the product of a positive and a negative number is negative
