Algebra

x+ (-x) is equal to
1. 1
2. 0
3. infinite
4. not defined
The constant term of the expression 3ab+4c-9 is
1. 9
2. 4
3. -9
4. 3
2pq and -7qp are
1. like terms
2. unlike terms
3. not a term
4. none of them
An algebric statement which is equivalent to the verbal statement " three times the sum of x and y" is
1. 3(x+y)
2. 3+x+y
3. 3x+y
4. 3+xy
The numerical coeficient of -7mn is
1. 7
2. -7
3. p
4. -p
Choose pair of like terms
1. 7p,7x
2. 7r,7x
3. -4x,4
4. -4x,7x
The value of 7a-4b when a=3,b=2 is
1. 21
2. 13
3. 8
4. 32
Sum of a-b+c and -a+b-c is
1. 0
2. 1
3. not defined
4. infinity
The addition of 3mn, -5mn ,8mn and -4mn is
1. mn
2. -mn
3. 2mn
4. 3mn
In an expression, we can add or subtract only
1. like terms
2. unlike terms
3. all terms
4. none of the above