**Problem : ** How many terms do the following expressions have?

a) 17*x*^{2} + 4*xy* + 2*y*

b) 2*y* + 4 - 6*y* + *x*^{2}

c) 8*y*^{6}

d) 3*xyz* + 4*yz* + 2*xz* + *z*^{2} - *xz*

b) 4

c) 1

d) 5

**Problem : ** In the expression 5*x* + 3*x*^{2} - *xy* - 5*z* + *z*^{3}, what is the coefficient of...

a) *x* ?

b) *z* ?

c) *z*^{3} ?

d) *x*^{2} ?

e) *xy* ?

f) *z*^{2} ?

b) -5

c) 1

d) 3

e) -1

f) 0

**Problem : ** What is the constant in the expression 4*x*^{2} + 5 + *x*?

**Problem : ** Simplify 5*x*^{2} + *x*^{3} -4*x*^{2} + *x* + 6 - 4 + *x*^{2} - 3*x* by combining like terms.

**Problem : ** Simplify 7*y* + 14*xy* - 3*y* - 4*y* - 6*x*^{2} - 2*xy* by combining like terms.

**Problem : ** Simplify 14 + *x* + 8*x*^{2} -6 - *x* + 5*x*^{2} by combining like terms.