Question 23
Fill in the blanks to make the statement true.
Like terms in the expression n(n+1) + 6(n-1) are ___ and ___.
We have, n(n+1)+6(n−1)=n2+n+6n−6 Hence, like terms in the expression n(n+1) + 6(n-1) are n and 6n.
Question 41
(−23)×(42)=(−42)×
Fill in the blanks to make the statements true. (−2)31×(−2)13=__
Question 58
___ × (-23) = -920
Question 29
The unlike terms in perimeters of following figures are ___ and ___.