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Expressions and Equations
  
 
Problems
Problem 2.1: How many terms do the following expressions have?
a) 17x2 + 4xy + 2y
b) 2y + 4 - 6y + x2
c) 8y6
d) 3xyz + 4yz + 2xz + z2 - xz
[Solution]
Problem 2.2: In the expression 5x + 3x2 - xy - 5z + z3, what is the coefficient of...
a) x ?
b) z ?
c) z3 ?
d) x2 ?
e) xy ?
f) z2 ?
[Solution]
Problem 2.3: What is the constant in the expression 4x2 + 5 + x? [Solution]
Problem 2.4: Simplify 5x2 + x3 -4x2 + x + 6 - 4 + x2 - 3x by combining like terms. [Solution]
Problem 2.5: Simplify 7y + 14xy - 3y - 4y - 6x2 - 2xy by combining like terms. [Solution]
Problem 2.6: Simplify 14 +
x + 8x2 -6 - x + 5x2
by combining like terms. [Solution]
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